Home / 2,920.25-4,380.03-1,989.24

Finding the Fourth Proportional to 2,920.25, 4,380.03 and 1,989.24

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Solution

The fourth proportional to 2,920.25, 4,380.03 and 1,989.24 is: 2,983.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.25 : 4,380.03 = 1,989.24 : x
  2. Step 2: Convert to fraction form
    2,920.25/4,380.03 = 1,989.24/x
  3. Step 3: Cross multiply
    2,920.25x = 4,380.03 × 1,989.24
  4. Step 4: Simplify right side
    2,920.25x = 8,712,930.88
  5. Step 5: Solve for x
    x = 8,712,930.88/2,920.25
  6. Step 6: Final answer
    x = 2,983.63

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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.