Home / 1,520.45-2,278.25-1,374.65

Finding the Fourth Proportional to 1,520.45, 2,278.25 and 1,374.65

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Solution

The fourth proportional to 1,520.45, 2,278.25 and 1,374.65 is: 2,059.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.45 : 2,278.25 = 1,374.65 : x
  2. Step 2: Convert to fraction form
    1,520.45/2,278.25 = 1,374.65/x
  3. Step 3: Cross multiply
    1,520.45x = 2,278.25 × 1,374.65
  4. Step 4: Simplify right side
    1,520.45x = 3,131,795.18
  5. Step 5: Solve for x
    x = 3,131,795.18/1,520.45
  6. Step 6: Final answer
    x = 2,059.78

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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.