Home / 3,988.18-5,981.80-1,066.71

Finding the Fourth Proportional to 3,988.18, 5,981.80 and 1,066.71

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Solution

The fourth proportional to 3,988.18, 5,981.80 and 1,066.71 is: 1,599.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.18 : 5,981.80 = 1,066.71 : x
  2. Step 2: Convert to fraction form
    3,988.18/5,981.80 = 1,066.71/x
  3. Step 3: Cross multiply
    3,988.18x = 5,981.80 × 1,066.71
  4. Step 4: Simplify right side
    3,988.18x = 6,380,845.88
  5. Step 5: Solve for x
    x = 6,380,845.88/3,988.18
  6. Step 6: Final answer
    x = 1,599.94

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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.