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Finding the Fourth Proportional to 2,969, 4,454.26 and 1,120.13

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Solution

The fourth proportional to 2,969, 4,454.26 and 1,120.13 is: 1,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,969 : 4,454.26 = 1,120.13 : x
  2. Step 2: Convert to fraction form
    2,969/4,454.26 = 1,120.13/x
  3. Step 3: Cross multiply
    2,969x = 4,454.26 × 1,120.13
  4. Step 4: Simplify right side
    2,969x = 4,989,350.25
  5. Step 5: Solve for x
    x = 4,989,350.25/2,969
  6. Step 6: Final answer
    x = 1,680.48

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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.