Home / 2,780.32-3,827.10-2,517.88

Finding the Fourth Proportional to 2,780.32, 3,827.10 and 2,517.88

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Solution

The fourth proportional to 2,780.32, 3,827.10 and 2,517.88 is: 3,465.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.32 : 3,827.10 = 2,517.88 : x
  2. Step 2: Convert to fraction form
    2,780.32/3,827.10 = 2,517.88/x
  3. Step 3: Cross multiply
    2,780.32x = 3,827.10 × 2,517.88
  4. Step 4: Simplify right side
    2,780.32x = 9,636,178.55
  5. Step 5: Solve for x
    x = 9,636,178.55/2,780.32
  6. Step 6: Final answer
    x = 3,465.85

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1.5x scale

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.