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Finding the Fourth Proportional to 8,609.42, 11,881.08 and 4,781.31

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Solution

The fourth proportional to 8,609.42, 11,881.08 and 4,781.31 is: 6,598.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.42 : 11,881.08 = 4,781.31 : x
  2. Step 2: Convert to fraction form
    8,609.42/11,881.08 = 4,781.31/x
  3. Step 3: Cross multiply
    8,609.42x = 11,881.08 × 4,781.31
  4. Step 4: Simplify right side
    8,609.42x = 56,807,126.61
  5. Step 5: Solve for x
    x = 56,807,126.61/8,609.42
  6. Step 6: Final answer
    x = 6,598.26

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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.