Home / 2,866.23-3,955.57-1,687.39

Finding the Fourth Proportional to 2,866.23, 3,955.57 and 1,687.39

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Solution

The fourth proportional to 2,866.23, 3,955.57 and 1,687.39 is: 2,328.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.23 : 3,955.57 = 1,687.39 : x
  2. Step 2: Convert to fraction form
    2,866.23/3,955.57 = 1,687.39/x
  3. Step 3: Cross multiply
    2,866.23x = 3,955.57 × 1,687.39
  4. Step 4: Simplify right side
    2,866.23x = 6,674,575.15
  5. Step 5: Solve for x
    x = 6,674,575.15/2,866.23
  6. Step 6: Final answer
    x = 2,328.69

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Half scale
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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.