Home / 3,987.74-5,981.59-1,066.04

Finding the Fourth Proportional to 3,987.74, 5,981.59 and 1,066.04

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Solution

The fourth proportional to 3,987.74, 5,981.59 and 1,066.04 is: 1,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.74 : 5,981.59 = 1,066.04 : x
  2. Step 2: Convert to fraction form
    3,987.74/5,981.59 = 1,066.04/x
  3. Step 3: Cross multiply
    3,987.74x = 5,981.59 × 1,066.04
  4. Step 4: Simplify right side
    3,987.74x = 6,376,581.63
  5. Step 5: Solve for x
    x = 6,376,581.63/3,987.74
  6. Step 6: Final answer
    x = 1,599.05

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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.