Home / 8,886.11-13,331.89-6,421.78

Finding the Fourth Proportional to 8,886.11, 13,331.89 and 6,421.78

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Solution

The fourth proportional to 8,886.11, 13,331.89 and 6,421.78 is: 9,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.11 : 13,331.89 = 6,421.78 : x
  2. Step 2: Convert to fraction form
    8,886.11/13,331.89 = 6,421.78/x
  3. Step 3: Cross multiply
    8,886.11x = 13,331.89 × 6,421.78
  4. Step 4: Simplify right side
    8,886.11x = 85,614,489.26
  5. Step 5: Solve for x
    x = 85,614,489.26/8,886.11
  6. Step 6: Final answer
    x = 9,634.65

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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.