Home / 8,115.28-11,199.16-4,578.57

Finding the Fourth Proportional to 8,115.28, 11,199.16 and 4,578.57

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Solution

The fourth proportional to 8,115.28, 11,199.16 and 4,578.57 is: 6,318.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.28 : 11,199.16 = 4,578.57 : x
  2. Step 2: Convert to fraction form
    8,115.28/11,199.16 = 4,578.57/x
  3. Step 3: Cross multiply
    8,115.28x = 11,199.16 × 4,578.57
  4. Step 4: Simplify right side
    8,115.28x = 51,276,126.55
  5. Step 5: Solve for x
    x = 51,276,126.55/8,115.28
  6. Step 6: Final answer
    x = 6,318.47

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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.