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Finding the Fourth Proportional to 8,781.58, 12,117.16 and 5,004.82

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Solution

The fourth proportional to 8,781.58, 12,117.16 and 5,004.82 is: 6,905.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.58 : 12,117.16 = 5,004.82 : x
  2. Step 2: Convert to fraction form
    8,781.58/12,117.16 = 5,004.82/x
  3. Step 3: Cross multiply
    8,781.58x = 12,117.16 × 5,004.82
  4. Step 4: Simplify right side
    8,781.58x = 60,644,211.11
  5. Step 5: Solve for x
    x = 60,644,211.11/8,781.58
  6. Step 6: Final answer
    x = 6,905.84

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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.