Home / 9,318.72-12,859.44-5,126.88

Finding the Fourth Proportional to 9,318.72, 12,859.44 and 5,126.88

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Solution

The fourth proportional to 9,318.72, 12,859.44 and 5,126.88 is: 7,074.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.72 : 12,859.44 = 5,126.88 : x
  2. Step 2: Convert to fraction form
    9,318.72/12,859.44 = 5,126.88/x
  3. Step 3: Cross multiply
    9,318.72x = 12,859.44 × 5,126.88
  4. Step 4: Simplify right side
    9,318.72x = 65,928,805.75
  5. Step 5: Solve for x
    x = 65,928,805.75/9,318.72
  6. Step 6: Final answer
    x = 7,074.88

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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.