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Finding the Fourth Proportional to 3,560.40, 5,340.18 and 963.54

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Solution

The fourth proportional to 3,560.40, 5,340.18 and 963.54 is: 1,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,560.40 : 5,340.18 = 963.54 : x
  2. Step 2: Convert to fraction form
    3,560.40/5,340.18 = 963.54/x
  3. Step 3: Cross multiply
    3,560.40x = 5,340.18 × 963.54
  4. Step 4: Simplify right side
    3,560.40x = 5,145,477.04
  5. Step 5: Solve for x
    x = 5,145,477.04/3,560.40
  6. Step 6: Final answer
    x = 1,445.20

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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.