Home / 5,428.10-7,489.12-3,746.85

Finding the Fourth Proportional to 5,428.10, 7,489.12 and 3,746.85

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Solution

The fourth proportional to 5,428.10, 7,489.12 and 3,746.85 is: 5,169.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.10 : 7,489.12 = 3,746.85 : x
  2. Step 2: Convert to fraction form
    5,428.10/7,489.12 = 3,746.85/x
  3. Step 3: Cross multiply
    5,428.10x = 7,489.12 × 3,746.85
  4. Step 4: Simplify right side
    5,428.10x = 28,060,609.27
  5. Step 5: Solve for x
    x = 28,060,609.27/5,428.10
  6. Step 6: Final answer
    x = 5,169.51

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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.