Home / 3,988.40-5,981.34-3,691.94

Finding the Fourth Proportional to 3,988.40, 5,981.34 and 3,691.94

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Solution

The fourth proportional to 3,988.40, 5,981.34 and 3,691.94 is: 5,536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.40 : 5,981.34 = 3,691.94 : x
  2. Step 2: Convert to fraction form
    3,988.40/5,981.34 = 3,691.94/x
  3. Step 3: Cross multiply
    3,988.40x = 5,981.34 × 3,691.94
  4. Step 4: Simplify right side
    3,988.40x = 22,082,748.40
  5. Step 5: Solve for x
    x = 22,082,748.40/3,988.40
  6. Step 6: Final answer
    x = 5,536.74

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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.