Home / 8,687.04-11,989.68-5,151.52

Finding the Fourth Proportional to 8,687.04, 11,989.68 and 5,151.52

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Solution

The fourth proportional to 8,687.04, 11,989.68 and 5,151.52 is: 7,110.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.04 : 11,989.68 = 5,151.52 : x
  2. Step 2: Convert to fraction form
    8,687.04/11,989.68 = 5,151.52/x
  3. Step 3: Cross multiply
    8,687.04x = 11,989.68 × 5,151.52
  4. Step 4: Simplify right side
    8,687.04x = 61,765,076.31
  5. Step 5: Solve for x
    x = 61,765,076.31/8,687.04
  6. Step 6: Final answer
    x = 7,110.03

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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.