Home / 2,780.46-4,187.14-2,419.61

Finding the Fourth Proportional to 2,780.46, 4,187.14 and 2,419.61

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Solution

The fourth proportional to 2,780.46, 4,187.14 and 2,419.61 is: 3,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.46 : 4,187.14 = 2,419.61 : x
  2. Step 2: Convert to fraction form
    2,780.46/4,187.14 = 2,419.61/x
  3. Step 3: Cross multiply
    2,780.46x = 4,187.14 × 2,419.61
  4. Step 4: Simplify right side
    2,780.46x = 10,131,232.44
  5. Step 5: Solve for x
    x = 10,131,232.44/2,780.46
  6. Step 6: Final answer
    x = 3,643.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.