Home / 2,380.95-3,572.45-921.13

Finding the Fourth Proportional to 2,380.95, 3,572.45 and 921.13

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Solution

The fourth proportional to 2,380.95, 3,572.45 and 921.13 is: 1,382.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.95 : 3,572.45 = 921.13 : x
  2. Step 2: Convert to fraction form
    2,380.95/3,572.45 = 921.13/x
  3. Step 3: Cross multiply
    2,380.95x = 3,572.45 × 921.13
  4. Step 4: Simplify right side
    2,380.95x = 3,290,690.87
  5. Step 5: Solve for x
    x = 3,290,690.87/2,380.95
  6. Step 6: Final answer
    x = 1,382.09

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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.