Home / 2,689.27-4,035.94-1,229.45

Finding the Fourth Proportional to 2,689.27, 4,035.94 and 1,229.45

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Solution

The fourth proportional to 2,689.27, 4,035.94 and 1,229.45 is: 1,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.27 : 4,035.94 = 1,229.45 : x
  2. Step 2: Convert to fraction form
    2,689.27/4,035.94 = 1,229.45/x
  3. Step 3: Cross multiply
    2,689.27x = 4,035.94 × 1,229.45
  4. Step 4: Simplify right side
    2,689.27x = 4,961,963.18
  5. Step 5: Solve for x
    x = 4,961,963.18/2,689.27
  6. Step 6: Final answer
    x = 1,845.10

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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.