Home / 8,473.28-11,689.18-5,490.12

Finding the Fourth Proportional to 8,473.28, 11,689.18 and 5,490.12

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Solution

The fourth proportional to 8,473.28, 11,689.18 and 5,490.12 is: 7,573.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,473.28 : 11,689.18 = 5,490.12 : x
  2. Step 2: Convert to fraction form
    8,473.28/11,689.18 = 5,490.12/x
  3. Step 3: Cross multiply
    8,473.28x = 11,689.18 × 5,490.12
  4. Step 4: Simplify right side
    8,473.28x = 64,175,000.90
  5. Step 5: Solve for x
    x = 64,175,000.90/8,473.28
  6. Step 6: Final answer
    x = 7,573.81

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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.