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Finding the Fourth Proportional to 2,961.65, 4,442.46 and 770.37

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Solution

The fourth proportional to 2,961.65, 4,442.46 and 770.37 is: 1,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.65 : 4,442.46 = 770.37 : x
  2. Step 2: Convert to fraction form
    2,961.65/4,442.46 = 770.37/x
  3. Step 3: Cross multiply
    2,961.65x = 4,442.46 × 770.37
  4. Step 4: Simplify right side
    2,961.65x = 3,422,337.91
  5. Step 5: Solve for x
    x = 3,422,337.91/2,961.65
  6. Step 6: Final answer
    x = 1,155.55

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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.