Home / 4,881.65-7,321.92-1,418.90

Finding the Fourth Proportional to 4,881.65, 7,321.92 and 1,418.90

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Solution

The fourth proportional to 4,881.65, 7,321.92 and 1,418.90 is: 2,128.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.65 : 7,321.92 = 1,418.90 : x
  2. Step 2: Convert to fraction form
    4,881.65/7,321.92 = 1,418.90/x
  3. Step 3: Cross multiply
    4,881.65x = 7,321.92 × 1,418.90
  4. Step 4: Simplify right side
    4,881.65x = 10,389,072.29
  5. Step 5: Solve for x
    x = 10,389,072.29/4,881.65
  6. Step 6: Final answer
    x = 2,128.19

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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.