Home / 8,665.14-12,988.19-3,398.57

Finding the Fourth Proportional to 8,665.14, 12,988.19 and 3,398.57

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Solution

The fourth proportional to 8,665.14, 12,988.19 and 3,398.57 is: 5,094.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.14 : 12,988.19 = 3,398.57 : x
  2. Step 2: Convert to fraction form
    8,665.14/12,988.19 = 3,398.57/x
  3. Step 3: Cross multiply
    8,665.14x = 12,988.19 × 3,398.57
  4. Step 4: Simplify right side
    8,665.14x = 44,141,216.44
  5. Step 5: Solve for x
    x = 44,141,216.44/8,665.14
  6. Step 6: Final answer
    x = 5,094.11

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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.