Home / 8,115.71-11,199.56-4,578.89

Finding the Fourth Proportional to 8,115.71, 11,199.56 and 4,578.89

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Solution

The fourth proportional to 8,115.71, 11,199.56 and 4,578.89 is: 6,318.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.71 : 11,199.56 = 4,578.89 : x
  2. Step 2: Convert to fraction form
    8,115.71/11,199.56 = 4,578.89/x
  3. Step 3: Cross multiply
    8,115.71x = 11,199.56 × 4,578.89
  4. Step 4: Simplify right side
    8,115.71x = 51,281,474.40
  5. Step 5: Solve for x
    x = 51,281,474.40/8,115.71
  6. Step 6: Final answer
    x = 6,318.79

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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.