Home / 8,775.17-13,147.90-5,305.13

Finding the Fourth Proportional to 8,775.17, 13,147.90 and 5,305.13

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Solution

The fourth proportional to 8,775.17, 13,147.90 and 5,305.13 is: 7,948.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.17 : 13,147.90 = 5,305.13 : x
  2. Step 2: Convert to fraction form
    8,775.17/13,147.90 = 5,305.13/x
  3. Step 3: Cross multiply
    8,775.17x = 13,147.90 × 5,305.13
  4. Step 4: Simplify right side
    8,775.17x = 69,751,239.72
  5. Step 5: Solve for x
    x = 69,751,239.72/8,775.17
  6. Step 6: Final answer
    x = 7,948.71

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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.