Home / 9,781.20-13,488.96-6,545.28

Finding the Fourth Proportional to 9,781.20, 13,488.96 and 6,545.28

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Solution

The fourth proportional to 9,781.20, 13,488.96 and 6,545.28 is: 9,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,781.20 : 13,488.96 = 6,545.28 : x
  2. Step 2: Convert to fraction form
    9,781.20/13,488.96 = 6,545.28/x
  3. Step 3: Cross multiply
    9,781.20x = 13,488.96 × 6,545.28
  4. Step 4: Simplify right side
    9,781.20x = 88,289,020.11
  5. Step 5: Solve for x
    x = 88,289,020.11/9,781.20
  6. Step 6: Final answer
    x = 9,026.40

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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.