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Finding the Fourth Proportional to 2,699.47, 4,049.75 and 969.31

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Solution

The fourth proportional to 2,699.47, 4,049.75 and 969.31 is: 1,454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.47 : 4,049.75 = 969.31 : x
  2. Step 2: Convert to fraction form
    2,699.47/4,049.75 = 969.31/x
  3. Step 3: Cross multiply
    2,699.47x = 4,049.75 × 969.31
  4. Step 4: Simplify right side
    2,699.47x = 3,925,463.17
  5. Step 5: Solve for x
    x = 3,925,463.17/2,699.47
  6. Step 6: Final answer
    x = 1,454.16

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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.