Home / 3,409.34-5,115.82-2,587.40

Finding the Fourth Proportional to 3,409.34, 5,115.82 and 2,587.40

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Solution

The fourth proportional to 3,409.34, 5,115.82 and 2,587.40 is: 3,882.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.34 : 5,115.82 = 2,587.40 : x
  2. Step 2: Convert to fraction form
    3,409.34/5,115.82 = 2,587.40/x
  3. Step 3: Cross multiply
    3,409.34x = 5,115.82 × 2,587.40
  4. Step 4: Simplify right side
    3,409.34x = 13,236,672.67
  5. Step 5: Solve for x
    x = 13,236,672.67/3,409.34
  6. Step 6: Final answer
    x = 3,882.47

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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.