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Finding the Fourth Proportional to 2,376.82, 3,280.11 and 1,328.88

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Solution

The fourth proportional to 2,376.82, 3,280.11 and 1,328.88 is: 1,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.82 : 3,280.11 = 1,328.88 : x
  2. Step 2: Convert to fraction form
    2,376.82/3,280.11 = 1,328.88/x
  3. Step 3: Cross multiply
    2,376.82x = 3,280.11 × 1,328.88
  4. Step 4: Simplify right side
    2,376.82x = 4,358,872.58
  5. Step 5: Solve for x
    x = 4,358,872.58/2,376.82
  6. Step 6: Final answer
    x = 1,833.91

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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.