Home / 3,456.78-4,770.35-1,964.70

Finding the Fourth Proportional to 3,456.78, 4,770.35 and 1,964.70

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Solution

The fourth proportional to 3,456.78, 4,770.35 and 1,964.70 is: 2,711.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,456.78 : 4,770.35 = 1,964.70 : x
  2. Step 2: Convert to fraction form
    3,456.78/4,770.35 = 1,964.70/x
  3. Step 3: Cross multiply
    3,456.78x = 4,770.35 × 1,964.70
  4. Step 4: Simplify right side
    3,456.78x = 9,372,315.24
  5. Step 5: Solve for x
    x = 9,372,315.24/3,456.78
  6. Step 6: Final answer
    x = 2,711.28

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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.