Home / 8,391.25-12,589.62-2,547.87

Finding the Fourth Proportional to 8,391.25, 12,589.62 and 2,547.87

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Solution

The fourth proportional to 8,391.25, 12,589.62 and 2,547.87 is: 3,822.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.25 : 12,589.62 = 2,547.87 : x
  2. Step 2: Convert to fraction form
    8,391.25/12,589.62 = 2,547.87/x
  3. Step 3: Cross multiply
    8,391.25x = 12,589.62 × 2,547.87
  4. Step 4: Simplify right side
    8,391.25x = 32,076,715.11
  5. Step 5: Solve for x
    x = 32,076,715.11/8,391.25
  6. Step 6: Final answer
    x = 3,822.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.