Home / 9,179.28-13,770.54-3,988.80

Finding the Fourth Proportional to 9,179.28, 13,770.54 and 3,988.80

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Solution

The fourth proportional to 9,179.28, 13,770.54 and 3,988.80 is: 5,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.28 : 13,770.54 = 3,988.80 : x
  2. Step 2: Convert to fraction form
    9,179.28/13,770.54 = 3,988.80/x
  3. Step 3: Cross multiply
    9,179.28x = 13,770.54 × 3,988.80
  4. Step 4: Simplify right side
    9,179.28x = 54,927,929.95
  5. Step 5: Solve for x
    x = 54,927,929.95/9,179.28
  6. Step 6: Final answer
    x = 5,983.90

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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.