Home / 9,115.08-12,578.46-5,137

Finding the Fourth Proportional to 9,115.08, 12,578.46 and 5,137

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Solution

The fourth proportional to 9,115.08, 12,578.46 and 5,137 is: 7,088.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.08 : 12,578.46 = 5,137 : x
  2. Step 2: Convert to fraction form
    9,115.08/12,578.46 = 5,137/x
  3. Step 3: Cross multiply
    9,115.08x = 12,578.46 × 5,137
  4. Step 4: Simplify right side
    9,115.08x = 64,615,549.02
  5. Step 5: Solve for x
    x = 64,615,549.02/9,115.08
  6. Step 6: Final answer
    x = 7,088.86

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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.