Home / 3,126.21-4,313.36-1,866.75

Finding the Fourth Proportional to 3,126.21, 4,313.36 and 1,866.75

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Solution

The fourth proportional to 3,126.21, 4,313.36 and 1,866.75 is: 2,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.21 : 4,313.36 = 1,866.75 : x
  2. Step 2: Convert to fraction form
    3,126.21/4,313.36 = 1,866.75/x
  3. Step 3: Cross multiply
    3,126.21x = 4,313.36 × 1,866.75
  4. Step 4: Simplify right side
    3,126.21x = 8,051,964.78
  5. Step 5: Solve for x
    x = 8,051,964.78/3,126.21
  6. Step 6: Final answer
    x = 2,575.63

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Double 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.