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Finding the Fourth Proportional to 8,888.78, 13,331.82 and 5,591.81

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Solution

The fourth proportional to 8,888.78, 13,331.82 and 5,591.81 is: 8,386.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,888.78 : 13,331.82 = 5,591.81 : x
  2. Step 2: Convert to fraction form
    8,888.78/13,331.82 = 5,591.81/x
  3. Step 3: Cross multiply
    8,888.78x = 13,331.82 × 5,591.81
  4. Step 4: Simplify right side
    8,888.78x = 74,549,004.39
  5. Step 5: Solve for x
    x = 74,549,004.39/8,888.78
  6. Step 6: Final answer
    x = 8,386.87

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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.