Home / 2,972.52-4,100.76-2,272.68

Finding the Fourth Proportional to 2,972.52, 4,100.76 and 2,272.68

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Solution

The fourth proportional to 2,972.52, 4,100.76 and 2,272.68 is: 3,135.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.52 : 4,100.76 = 2,272.68 : x
  2. Step 2: Convert to fraction form
    2,972.52/4,100.76 = 2,272.68/x
  3. Step 3: Cross multiply
    2,972.52x = 4,100.76 × 2,272.68
  4. Step 4: Simplify right side
    2,972.52x = 9,319,715.24
  5. Step 5: Solve for x
    x = 9,319,715.24/2,972.52
  6. Step 6: Final answer
    x = 3,135.29

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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.