Home / 1,639.20-2,261.61-1,048.71

Finding the Fourth Proportional to 1,639.20, 2,261.61 and 1,048.71

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Solution

The fourth proportional to 1,639.20, 2,261.61 and 1,048.71 is: 1,446.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.20 : 2,261.61 = 1,048.71 : x
  2. Step 2: Convert to fraction form
    1,639.20/2,261.61 = 1,048.71/x
  3. Step 3: Cross multiply
    1,639.20x = 2,261.61 × 1,048.71
  4. Step 4: Simplify right side
    1,639.20x = 2,371,773.02
  5. Step 5: Solve for x
    x = 2,371,773.02/1,639.20
  6. Step 6: Final answer
    x = 1,446.91

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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.