Home / 3,472.17-4,791.35-1,980.15

Finding the Fourth Proportional to 3,472.17, 4,791.35 and 1,980.15

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Solution

The fourth proportional to 3,472.17, 4,791.35 and 1,980.15 is: 2,732.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,472.17 : 4,791.35 = 1,980.15 : x
  2. Step 2: Convert to fraction form
    3,472.17/4,791.35 = 1,980.15/x
  3. Step 3: Cross multiply
    3,472.17x = 4,791.35 × 1,980.15
  4. Step 4: Simplify right side
    3,472.17x = 9,487,578.69
  5. Step 5: Solve for x
    x = 9,487,578.69/3,472.17
  6. Step 6: Final answer
    x = 2,732.47

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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.