Home / 3,987.13-5,974.21-2,345.17

Finding the Fourth Proportional to 3,987.13, 5,974.21 and 2,345.17

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Solution

The fourth proportional to 3,987.13, 5,974.21 and 2,345.17 is: 3,513.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.13 : 5,974.21 = 2,345.17 : x
  2. Step 2: Convert to fraction form
    3,987.13/5,974.21 = 2,345.17/x
  3. Step 3: Cross multiply
    3,987.13x = 5,974.21 × 2,345.17
  4. Step 4: Simplify right side
    3,987.13x = 14,010,538.07
  5. Step 5: Solve for x
    x = 14,010,538.07/3,987.13
  6. Step 6: Final answer
    x = 3,513.94

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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.