Home / 8,538.47-12,807.69-3,340.70

Finding the Fourth Proportional to 8,538.47, 12,807.69 and 3,340.70

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Solution

The fourth proportional to 8,538.47, 12,807.69 and 3,340.70 is: 5,011.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.47 : 12,807.69 = 3,340.70 : x
  2. Step 2: Convert to fraction form
    8,538.47/12,807.69 = 3,340.70/x
  3. Step 3: Cross multiply
    8,538.47x = 12,807.69 × 3,340.70
  4. Step 4: Simplify right side
    8,538.47x = 42,786,585.94
  5. Step 5: Solve for x
    x = 42,786,585.94/8,538.47
  6. Step 6: Final answer
    x = 5,011.04

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Similar ratio
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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.