Home / 2,767.20-3,818.80-1,572.15

Finding the Fourth Proportional to 2,767.20, 3,818.80 and 1,572.15

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Solution

The fourth proportional to 2,767.20, 3,818.80 and 1,572.15 is: 2,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.20 : 3,818.80 = 1,572.15 : x
  2. Step 2: Convert to fraction form
    2,767.20/3,818.80 = 1,572.15/x
  3. Step 3: Cross multiply
    2,767.20x = 3,818.80 × 1,572.15
  4. Step 4: Simplify right side
    2,767.20x = 6,003,732.04
  5. Step 5: Solve for x
    x = 6,003,732.04/2,767.20
  6. Step 6: Final answer
    x = 2,169.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.