Home / 8,757.08-13,139.22-6,428.96

Finding the Fourth Proportional to 8,757.08, 13,139.22 and 6,428.96

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Solution

The fourth proportional to 8,757.08, 13,139.22 and 6,428.96 is: 9,646.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.08 : 13,139.22 = 6,428.96 : x
  2. Step 2: Convert to fraction form
    8,757.08/13,139.22 = 6,428.96/x
  3. Step 3: Cross multiply
    8,757.08x = 13,139.22 × 6,428.96
  4. Step 4: Simplify right side
    8,757.08x = 84,471,519.81
  5. Step 5: Solve for x
    x = 84,471,519.81/8,757.08
  6. Step 6: Final answer
    x = 9,646.08

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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.