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Finding the Fourth Proportional to 2,347.85, 3,520.67 and 787.56

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Solution

The fourth proportional to 2,347.85, 3,520.67 and 787.56 is: 1,180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.85 : 3,520.67 = 787.56 : x
  2. Step 2: Convert to fraction form
    2,347.85/3,520.67 = 787.56/x
  3. Step 3: Cross multiply
    2,347.85x = 3,520.67 × 787.56
  4. Step 4: Simplify right side
    2,347.85x = 2,772,734.93
  5. Step 5: Solve for x
    x = 2,772,734.93/2,347.85
  6. Step 6: Final answer
    x = 1,180.97

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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.