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Finding the Fourth Proportional to 3,637.75, 5,020.10 and 1,981.75

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Solution

The fourth proportional to 3,637.75, 5,020.10 and 1,981.75 is: 2,734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,637.75 : 5,020.10 = 1,981.75 : x
  2. Step 2: Convert to fraction form
    3,637.75/5,020.10 = 1,981.75/x
  3. Step 3: Cross multiply
    3,637.75x = 5,020.10 × 1,981.75
  4. Step 4: Simplify right side
    3,637.75x = 9,948,583.18
  5. Step 5: Solve for x
    x = 9,948,583.18/3,637.75
  6. Step 6: Final answer
    x = 2,734.82

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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.