Home / 2,670.22-4,005.19-938.71

Finding the Fourth Proportional to 2,670.22, 4,005.19 and 938.71

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Solution

The fourth proportional to 2,670.22, 4,005.19 and 938.71 is: 1,408.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.22 : 4,005.19 = 938.71 : x
  2. Step 2: Convert to fraction form
    2,670.22/4,005.19 = 938.71/x
  3. Step 3: Cross multiply
    2,670.22x = 4,005.19 × 938.71
  4. Step 4: Simplify right side
    2,670.22x = 3,759,711.90
  5. Step 5: Solve for x
    x = 3,759,711.90/2,670.22
  6. Step 6: Final answer
    x = 1,408.02

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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.