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Finding the Fourth Proportional to 5,007.28, 6,910.32 and 3,240.40

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Solution

The fourth proportional to 5,007.28, 6,910.32 and 3,240.40 is: 4,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,007.28 : 6,910.32 = 3,240.40 : x
  2. Step 2: Convert to fraction form
    5,007.28/6,910.32 = 3,240.40/x
  3. Step 3: Cross multiply
    5,007.28x = 6,910.32 × 3,240.40
  4. Step 4: Simplify right side
    5,007.28x = 22,392,200.93
  5. Step 5: Solve for x
    x = 22,392,200.93/5,007.28
  6. Step 6: Final answer
    x = 4,471.93

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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.