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Finding the Fourth Proportional to 3,617.84, 5,426.76 and 1,972.12

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Solution

The fourth proportional to 3,617.84, 5,426.76 and 1,972.12 is: 2,958.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.84 : 5,426.76 = 1,972.12 : x
  2. Step 2: Convert to fraction form
    3,617.84/5,426.76 = 1,972.12/x
  3. Step 3: Cross multiply
    3,617.84x = 5,426.76 × 1,972.12
  4. Step 4: Simplify right side
    3,617.84x = 10,702,221.93
  5. Step 5: Solve for x
    x = 10,702,221.93/3,617.84
  6. Step 6: Final answer
    x = 2,958.18

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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.