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Finding the Fourth Proportional to 1,866.46, 2,575.52 and 1,080.76

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Solution

The fourth proportional to 1,866.46, 2,575.52 and 1,080.76 is: 1,491.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.46 : 2,575.52 = 1,080.76 : x
  2. Step 2: Convert to fraction form
    1,866.46/2,575.52 = 1,080.76/x
  3. Step 3: Cross multiply
    1,866.46x = 2,575.52 × 1,080.76
  4. Step 4: Simplify right side
    1,866.46x = 2,783,519.00
  5. Step 5: Solve for x
    x = 2,783,519.00/1,866.46
  6. Step 6: Final answer
    x = 1,491.34

Related Problems

Find fourth proportional to 933.23, 1,287.76 and 540.38
Half scale
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Double scale
Find fourth proportional to 1,867.46, 2,576.90 and 1,081.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.