Home / 5,732.78-7,911.56-3,215.70

Finding the Fourth Proportional to 5,732.78, 7,911.56 and 3,215.70

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Solution

The fourth proportional to 5,732.78, 7,911.56 and 3,215.70 is: 4,437.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,732.78 : 7,911.56 = 3,215.70 : x
  2. Step 2: Convert to fraction form
    5,732.78/7,911.56 = 3,215.70/x
  3. Step 3: Cross multiply
    5,732.78x = 7,911.56 × 3,215.70
  4. Step 4: Simplify right side
    5,732.78x = 25,441,193.44
  5. Step 5: Solve for x
    x = 25,441,193.44/5,732.78
  6. Step 6: Final answer
    x = 4,437.85

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1.5x scale

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.