Home / 2,354.78-3,242.20-1,999.95

Finding the Fourth Proportional to 2,354.78, 3,242.20 and 1,999.95

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Solution

The fourth proportional to 2,354.78, 3,242.20 and 1,999.95 is: 2,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,354.78 : 3,242.20 = 1,999.95 : x
  2. Step 2: Convert to fraction form
    2,354.78/3,242.20 = 1,999.95/x
  3. Step 3: Cross multiply
    2,354.78x = 3,242.20 × 1,999.95
  4. Step 4: Simplify right side
    2,354.78x = 6,484,227.89
  5. Step 5: Solve for x
    x = 6,484,227.89/2,354.78
  6. Step 6: Final answer
    x = 2,753.65

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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.