Home / 2,920.30-4,380.45-2,555.80

Finding the Fourth Proportional to 2,920.30, 4,380.45 and 2,555.80

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Solution

The fourth proportional to 2,920.30, 4,380.45 and 2,555.80 is: 3,833.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.30 : 4,380.45 = 2,555.80 : x
  2. Step 2: Convert to fraction form
    2,920.30/4,380.45 = 2,555.80/x
  3. Step 3: Cross multiply
    2,920.30x = 4,380.45 × 2,555.80
  4. Step 4: Simplify right side
    2,920.30x = 11,195,554.11
  5. Step 5: Solve for x
    x = 11,195,554.11/2,920.30
  6. Step 6: Final answer
    x = 3,833.70

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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.