Home / 8,934.78-12,330.56-5,158.64

Finding the Fourth Proportional to 8,934.78, 12,330.56 and 5,158.64

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Solution

The fourth proportional to 8,934.78, 12,330.56 and 5,158.64 is: 7,119.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.78 : 12,330.56 = 5,158.64 : x
  2. Step 2: Convert to fraction form
    8,934.78/12,330.56 = 5,158.64/x
  3. Step 3: Cross multiply
    8,934.78x = 12,330.56 × 5,158.64
  4. Step 4: Simplify right side
    8,934.78x = 63,608,920.04
  5. Step 5: Solve for x
    x = 63,608,920.04/8,934.78
  6. Step 6: Final answer
    x = 7,119.25

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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.