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Finding the Fourth Proportional to 2,787.62, 4,148.52 and 2,696.49

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Solution

The fourth proportional to 2,787.62, 4,148.52 and 2,696.49 is: 4,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.62 : 4,148.52 = 2,696.49 : x
  2. Step 2: Convert to fraction form
    2,787.62/4,148.52 = 2,696.49/x
  3. Step 3: Cross multiply
    2,787.62x = 4,148.52 × 2,696.49
  4. Step 4: Simplify right side
    2,787.62x = 11,186,432.58
  5. Step 5: Solve for x
    x = 11,186,432.58/2,787.62
  6. Step 6: Final answer
    x = 4,012.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.