Home / 8,711.86-12,023.45-5,175.09

Finding the Fourth Proportional to 8,711.86, 12,023.45 and 5,175.09

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Solution

The fourth proportional to 8,711.86, 12,023.45 and 5,175.09 is: 7,142.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.86 : 12,023.45 = 5,175.09 : x
  2. Step 2: Convert to fraction form
    8,711.86/12,023.45 = 5,175.09/x
  3. Step 3: Cross multiply
    8,711.86x = 12,023.45 × 5,175.09
  4. Step 4: Simplify right side
    8,711.86x = 62,222,435.86
  5. Step 5: Solve for x
    x = 62,222,435.86/8,711.86
  6. Step 6: Final answer
    x = 7,142.27

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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.