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Finding the Fourth Proportional to 2,074.56, 3,111.49 and 963.65

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Solution

The fourth proportional to 2,074.56, 3,111.49 and 963.65 is: 1,445.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.56 : 3,111.49 = 963.65 : x
  2. Step 2: Convert to fraction form
    2,074.56/3,111.49 = 963.65/x
  3. Step 3: Cross multiply
    2,074.56x = 3,111.49 × 963.65
  4. Step 4: Simplify right side
    2,074.56x = 2,998,376.11
  5. Step 5: Solve for x
    x = 2,998,376.11/2,074.56
  6. Step 6: Final answer
    x = 1,445.31

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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.