Home / 8,785.92-13,146.42-5,278.05

Finding the Fourth Proportional to 8,785.92, 13,146.42 and 5,278.05

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Solution

The fourth proportional to 8,785.92, 13,146.42 and 5,278.05 is: 7,897.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.92 : 13,146.42 = 5,278.05 : x
  2. Step 2: Convert to fraction form
    8,785.92/13,146.42 = 5,278.05/x
  3. Step 3: Cross multiply
    8,785.92x = 13,146.42 × 5,278.05
  4. Step 4: Simplify right side
    8,785.92x = 69,387,462.08
  5. Step 5: Solve for x
    x = 69,387,462.08/8,785.92
  6. Step 6: Final answer
    x = 7,897.57

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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.