Home / 1,949.12-2,689.74-1,064.90

Finding the Fourth Proportional to 1,949.12, 2,689.74 and 1,064.90

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Solution

The fourth proportional to 1,949.12, 2,689.74 and 1,064.90 is: 1,469.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.12 : 2,689.74 = 1,064.90 : x
  2. Step 2: Convert to fraction form
    1,949.12/2,689.74 = 1,064.90/x
  3. Step 3: Cross multiply
    1,949.12x = 2,689.74 × 1,064.90
  4. Step 4: Simplify right side
    1,949.12x = 2,864,304.13
  5. Step 5: Solve for x
    x = 2,864,304.13/1,949.12
  6. Step 6: Final answer
    x = 1,469.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.