Home / 8,345.78-11,516.37-4,987.92

Finding the Fourth Proportional to 8,345.78, 11,516.37 and 4,987.92

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Solution

The fourth proportional to 8,345.78, 11,516.37 and 4,987.92 is: 6,882.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.78 : 11,516.37 = 4,987.92 : x
  2. Step 2: Convert to fraction form
    8,345.78/11,516.37 = 4,987.92/x
  3. Step 3: Cross multiply
    8,345.78x = 11,516.37 × 4,987.92
  4. Step 4: Simplify right side
    8,345.78x = 57,442,732.25
  5. Step 5: Solve for x
    x = 57,442,732.25/8,345.78
  6. Step 6: Final answer
    x = 6,882.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.