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Finding the Fourth Proportional to 5,008.06, 7,512.12 and 1,721.20

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Solution

The fourth proportional to 5,008.06, 7,512.12 and 1,721.20 is: 2,581.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.06 : 7,512.12 = 1,721.20 : x
  2. Step 2: Convert to fraction form
    5,008.06/7,512.12 = 1,721.20/x
  3. Step 3: Cross multiply
    5,008.06x = 7,512.12 × 1,721.20
  4. Step 4: Simplify right side
    5,008.06x = 12,929,860.94
  5. Step 5: Solve for x
    x = 12,929,860.94/5,008.06
  6. Step 6: Final answer
    x = 2,581.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.