Home / 2,921.04-4,381.56-1,687.66

Finding the Fourth Proportional to 2,921.04, 4,381.56 and 1,687.66

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Solution

The fourth proportional to 2,921.04, 4,381.56 and 1,687.66 is: 2,531.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.04 : 4,381.56 = 1,687.66 : x
  2. Step 2: Convert to fraction form
    2,921.04/4,381.56 = 1,687.66/x
  3. Step 3: Cross multiply
    2,921.04x = 4,381.56 × 1,687.66
  4. Step 4: Simplify right side
    2,921.04x = 7,394,583.55
  5. Step 5: Solve for x
    x = 7,394,583.55/2,921.04
  6. Step 6: Final answer
    x = 2,531.49

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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.