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Finding the Fourth Proportional to 8,858.96, 13,248.78 and 7,877.84

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Solution

The fourth proportional to 8,858.96, 13,248.78 and 7,877.84 is: 11,781.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.96 : 13,248.78 = 7,877.84 : x
  2. Step 2: Convert to fraction form
    8,858.96/13,248.78 = 7,877.84/x
  3. Step 3: Cross multiply
    8,858.96x = 13,248.78 × 7,877.84
  4. Step 4: Simplify right side
    8,858.96x = 104,371,769.04
  5. Step 5: Solve for x
    x = 104,371,769.04/8,858.96
  6. Step 6: Final answer
    x = 11,781.49

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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.