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Finding the Fourth Proportional to 2,963.47, 4,445.31 and 772.12

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Solution

The fourth proportional to 2,963.47, 4,445.31 and 772.12 is: 1,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,963.47 : 4,445.31 = 772.12 : x
  2. Step 2: Convert to fraction form
    2,963.47/4,445.31 = 772.12/x
  3. Step 3: Cross multiply
    2,963.47x = 4,445.31 × 772.12
  4. Step 4: Simplify right side
    2,963.47x = 3,432,312.76
  5. Step 5: Solve for x
    x = 3,432,312.76/2,963.47
  6. Step 6: Final answer
    x = 1,158.21

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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.