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Finding the Fourth Proportional to 5,377.92, 7,421.92 and 3,020.16

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Solution

The fourth proportional to 5,377.92, 7,421.92 and 3,020.16 is: 4,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.92 : 7,421.92 = 3,020.16 : x
  2. Step 2: Convert to fraction form
    5,377.92/7,421.92 = 3,020.16/x
  3. Step 3: Cross multiply
    5,377.92x = 7,421.92 × 3,020.16
  4. Step 4: Simplify right side
    5,377.92x = 22,415,385.91
  5. Step 5: Solve for x
    x = 22,415,385.91/5,377.92
  6. Step 6: Final answer
    x = 4,168.04

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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.