Home / 2,770.31-4,151.79-1,538.30

Finding the Fourth Proportional to 2,770.31, 4,151.79 and 1,538.30

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Solution

The fourth proportional to 2,770.31, 4,151.79 and 1,538.30 is: 2,305.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.31 : 4,151.79 = 1,538.30 : x
  2. Step 2: Convert to fraction form
    2,770.31/4,151.79 = 1,538.30/x
  3. Step 3: Cross multiply
    2,770.31x = 4,151.79 × 1,538.30
  4. Step 4: Simplify right side
    2,770.31x = 6,386,708.94
  5. Step 5: Solve for x
    x = 6,386,708.94/2,770.31
  6. Step 6: Final answer
    x = 2,305.41

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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.