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Finding the Fourth Proportional to 2,963.79, 4,445.33 and 772.46

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Solution

The fourth proportional to 2,963.79, 4,445.33 and 772.46 is: 1,158.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,963.79 : 4,445.33 = 772.46 : x
  2. Step 2: Convert to fraction form
    2,963.79/4,445.33 = 772.46/x
  3. Step 3: Cross multiply
    2,963.79x = 4,445.33 × 772.46
  4. Step 4: Simplify right side
    2,963.79x = 3,433,847.04
  5. Step 5: Solve for x
    x = 3,433,847.04/2,963.79
  6. Step 6: Final answer
    x = 1,158.60

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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.