Home / 2,972.87-4,104.56-2,657.12

Finding the Fourth Proportional to 2,972.87, 4,104.56 and 2,657.12

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Solution

The fourth proportional to 2,972.87, 4,104.56 and 2,657.12 is: 3,668.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.87 : 4,104.56 = 2,657.12 : x
  2. Step 2: Convert to fraction form
    2,972.87/4,104.56 = 2,657.12/x
  3. Step 3: Cross multiply
    2,972.87x = 4,104.56 × 2,657.12
  4. Step 4: Simplify right side
    2,972.87x = 10,906,274.66
  5. Step 5: Solve for x
    x = 10,906,274.66/2,972.87
  6. Step 6: Final answer
    x = 3,668.61

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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.