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Finding the Fourth Proportional to 5,676.92, 8,516.18 and 1,781.63

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Solution

The fourth proportional to 5,676.92, 8,516.18 and 1,781.63 is: 2,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,676.92 : 8,516.18 = 1,781.63 : x
  2. Step 2: Convert to fraction form
    5,676.92/8,516.18 = 1,781.63/x
  3. Step 3: Cross multiply
    5,676.92x = 8,516.18 × 1,781.63
  4. Step 4: Simplify right side
    5,676.92x = 15,172,681.77
  5. Step 5: Solve for x
    x = 15,172,681.77/5,676.92
  6. Step 6: Final answer
    x = 2,672.70

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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.