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Finding the Fourth Proportional to 4,787.03, 7,178.11 and 2,187.74

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Solution

The fourth proportional to 4,787.03, 7,178.11 and 2,187.74 is: 3,280.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.03 : 7,178.11 = 2,187.74 : x
  2. Step 2: Convert to fraction form
    4,787.03/7,178.11 = 2,187.74/x
  3. Step 3: Cross multiply
    4,787.03x = 7,178.11 × 2,187.74
  4. Step 4: Simplify right side
    4,787.03x = 15,703,791.54
  5. Step 5: Solve for x
    x = 15,703,791.54/4,787.03
  6. Step 6: Final answer
    x = 3,280.49

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1.5x scale

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.