Home / 8,691.45-13,038.56-3,144.23

Finding the Fourth Proportional to 8,691.45, 13,038.56 and 3,144.23

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Solution

The fourth proportional to 8,691.45, 13,038.56 and 3,144.23 is: 4,716.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.45 : 13,038.56 = 3,144.23 : x
  2. Step 2: Convert to fraction form
    8,691.45/13,038.56 = 3,144.23/x
  3. Step 3: Cross multiply
    8,691.45x = 13,038.56 × 3,144.23
  4. Step 4: Simplify right side
    8,691.45x = 40,996,150.59
  5. Step 5: Solve for x
    x = 40,996,150.59/8,691.45
  6. Step 6: Final answer
    x = 4,716.84

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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.