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Finding the Fourth Proportional to 8,484.55, 12,715.18 and 6,402.85

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Solution

The fourth proportional to 8,484.55, 12,715.18 and 6,402.85 is: 9,595.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.55 : 12,715.18 = 6,402.85 : x
  2. Step 2: Convert to fraction form
    8,484.55/12,715.18 = 6,402.85/x
  3. Step 3: Cross multiply
    8,484.55x = 12,715.18 × 6,402.85
  4. Step 4: Simplify right side
    8,484.55x = 81,413,342.47
  5. Step 5: Solve for x
    x = 81,413,342.47/8,484.55
  6. Step 6: Final answer
    x = 9,595.48

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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.