Home / 3,581.12-4,941.87-1,987.68

Finding the Fourth Proportional to 3,581.12, 4,941.87 and 1,987.68

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Solution

The fourth proportional to 3,581.12, 4,941.87 and 1,987.68 is: 2,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.12 : 4,941.87 = 1,987.68 : x
  2. Step 2: Convert to fraction form
    3,581.12/4,941.87 = 1,987.68/x
  3. Step 3: Cross multiply
    3,581.12x = 4,941.87 × 1,987.68
  4. Step 4: Simplify right side
    3,581.12x = 9,822,837.63
  5. Step 5: Solve for x
    x = 9,822,837.63/3,581.12
  6. Step 6: Final answer
    x = 2,742.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.