Home / 3,930.64-5,426.28-3,716.24

Finding the Fourth Proportional to 3,930.64, 5,426.28 and 3,716.24

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Solution

The fourth proportional to 3,930.64, 5,426.28 and 3,716.24 is: 5,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.64 : 5,426.28 = 3,716.24 : x
  2. Step 2: Convert to fraction form
    3,930.64/5,426.28 = 3,716.24/x
  3. Step 3: Cross multiply
    3,930.64x = 5,426.28 × 3,716.24
  4. Step 4: Simplify right side
    3,930.64x = 20,165,358.79
  5. Step 5: Solve for x
    x = 20,165,358.79/3,930.64
  6. Step 6: Final answer
    x = 5,130.30

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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.