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Finding the Fourth Proportional to 10,082.79, 15,118.98 and 4,531.40

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Solution

The fourth proportional to 10,082.79, 15,118.98 and 4,531.40 is: 6,794.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,082.79 : 15,118.98 = 4,531.40 : x
  2. Step 2: Convert to fraction form
    10,082.79/15,118.98 = 4,531.40/x
  3. Step 3: Cross multiply
    10,082.79x = 15,118.98 × 4,531.40
  4. Step 4: Simplify right side
    10,082.79x = 68,510,070.38
  5. Step 5: Solve for x
    x = 68,510,070.38/10,082.79
  6. Step 6: Final answer
    x = 6,794.75

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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.