Home / 2,989.98-4,126.20-1,731.04

Finding the Fourth Proportional to 2,989.98, 4,126.20 and 1,731.04

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Solution

The fourth proportional to 2,989.98, 4,126.20 and 1,731.04 is: 2,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.98 : 4,126.20 = 1,731.04 : x
  2. Step 2: Convert to fraction form
    2,989.98/4,126.20 = 1,731.04/x
  3. Step 3: Cross multiply
    2,989.98x = 4,126.20 × 1,731.04
  4. Step 4: Simplify right side
    2,989.98x = 7,142,617.25
  5. Step 5: Solve for x
    x = 7,142,617.25/2,989.98
  6. Step 6: Final answer
    x = 2,388.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.