Home / 7,280.25-10,920.38-2,086.13

Finding the Fourth Proportional to 7,280.25, 10,920.38 and 2,086.13

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Solution

The fourth proportional to 7,280.25, 10,920.38 and 2,086.13 is: 3,129.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.25 : 10,920.38 = 2,086.13 : x
  2. Step 2: Convert to fraction form
    7,280.25/10,920.38 = 2,086.13/x
  3. Step 3: Cross multiply
    7,280.25x = 10,920.38 × 2,086.13
  4. Step 4: Simplify right side
    7,280.25x = 22,781,267.30
  5. Step 5: Solve for x
    x = 22,781,267.30/7,280.25
  6. Step 6: Final answer
    x = 3,129.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.