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Finding the Fourth Proportional to 8,754.40, 12,082.26 and 5,217.40

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Solution

The fourth proportional to 8,754.40, 12,082.26 and 5,217.40 is: 7,200.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.40 : 12,082.26 = 5,217.40 : x
  2. Step 2: Convert to fraction form
    8,754.40/12,082.26 = 5,217.40/x
  3. Step 3: Cross multiply
    8,754.40x = 12,082.26 × 5,217.40
  4. Step 4: Simplify right side
    8,754.40x = 63,037,983.32
  5. Step 5: Solve for x
    x = 63,037,983.32/8,754.40
  6. Step 6: Final answer
    x = 7,200.72

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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.