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Finding the Fourth Proportional to 2,381.79, 3,572.21 and 1,922.25

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Solution

The fourth proportional to 2,381.79, 3,572.21 and 1,922.25 is: 2,882.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.79 : 3,572.21 = 1,922.25 : x
  2. Step 2: Convert to fraction form
    2,381.79/3,572.21 = 1,922.25/x
  3. Step 3: Cross multiply
    2,381.79x = 3,572.21 × 1,922.25
  4. Step 4: Simplify right side
    2,381.79x = 6,866,671.06
  5. Step 5: Solve for x
    x = 6,866,671.06/2,381.79
  6. Step 6: Final answer
    x = 2,882.99

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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.