Home / 9,179.20-12,667.14-4,987.42

Finding the Fourth Proportional to 9,179.20, 12,667.14 and 4,987.42

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Solution

The fourth proportional to 9,179.20, 12,667.14 and 4,987.42 is: 6,882.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.20 : 12,667.14 = 4,987.42 : x
  2. Step 2: Convert to fraction form
    9,179.20/12,667.14 = 4,987.42/x
  3. Step 3: Cross multiply
    9,179.20x = 12,667.14 × 4,987.42
  4. Step 4: Simplify right side
    9,179.20x = 63,176,347.38
  5. Step 5: Solve for x
    x = 63,176,347.38/9,179.20
  6. Step 6: Final answer
    x = 6,882.55

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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.