Home / 9,114.28-12,575.78-5,337.78

Finding the Fourth Proportional to 9,114.28, 12,575.78 and 5,337.78

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Solution

The fourth proportional to 9,114.28, 12,575.78 and 5,337.78 is: 7,365.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,114.28 : 12,575.78 = 5,337.78 : x
  2. Step 2: Convert to fraction form
    9,114.28/12,575.78 = 5,337.78/x
  3. Step 3: Cross multiply
    9,114.28x = 12,575.78 × 5,337.78
  4. Step 4: Simplify right side
    9,114.28x = 67,126,746.97
  5. Step 5: Solve for x
    x = 67,126,746.97/9,114.28
  6. Step 6: Final answer
    x = 7,365.01

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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.