Home / 1,401.96-2,102.78-621.97

Finding the Fourth Proportional to 1,401.96, 2,102.78 and 621.97

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Solution

The fourth proportional to 1,401.96, 2,102.78 and 621.97 is: 932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.96 : 2,102.78 = 621.97 : x
  2. Step 2: Convert to fraction form
    1,401.96/2,102.78 = 621.97/x
  3. Step 3: Cross multiply
    1,401.96x = 2,102.78 × 621.97
  4. Step 4: Simplify right side
    1,401.96x = 1,307,866.08
  5. Step 5: Solve for x
    x = 1,307,866.08/1,401.96
  6. Step 6: Final answer
    x = 932.88

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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.