Home / 2,920.12-4,380.02-945.71

Finding the Fourth Proportional to 2,920.12, 4,380.02 and 945.71

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Solution

The fourth proportional to 2,920.12, 4,380.02 and 945.71 is: 1,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.12 : 4,380.02 = 945.71 : x
  2. Step 2: Convert to fraction form
    2,920.12/4,380.02 = 945.71/x
  3. Step 3: Cross multiply
    2,920.12x = 4,380.02 × 945.71
  4. Step 4: Simplify right side
    2,920.12x = 4,142,202.09
  5. Step 5: Solve for x
    x = 4,142,202.09/2,920.12
  6. Step 6: Final answer
    x = 1,418.51

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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.