Home / 3,987.36-5,979.76-1,454.14

Finding the Fourth Proportional to 3,987.36, 5,979.76 and 1,454.14

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Solution

The fourth proportional to 3,987.36, 5,979.76 and 1,454.14 is: 2,180.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.36 : 5,979.76 = 1,454.14 : x
  2. Step 2: Convert to fraction form
    3,987.36/5,979.76 = 1,454.14/x
  3. Step 3: Cross multiply
    3,987.36x = 5,979.76 × 1,454.14
  4. Step 4: Simplify right side
    3,987.36x = 8,695,408.21
  5. Step 5: Solve for x
    x = 8,695,408.21/3,987.36
  6. Step 6: Final answer
    x = 2,180.74

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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.