Home / 8,171.86-11,287.50-7,107.52

Finding the Fourth Proportional to 8,171.86, 11,287.50 and 7,107.52

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Solution

The fourth proportional to 8,171.86, 11,287.50 and 7,107.52 is: 9,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.86 : 11,287.50 = 7,107.52 : x
  2. Step 2: Convert to fraction form
    8,171.86/11,287.50 = 7,107.52/x
  3. Step 3: Cross multiply
    8,171.86x = 11,287.50 × 7,107.52
  4. Step 4: Simplify right side
    8,171.86x = 80,226,132
  5. Step 5: Solve for x
    x = 80,226,132/8,171.86
  6. Step 6: Final answer
    x = 9,817.36

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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.