Home / 2,639.11-3,957.73-1,159.05

Finding the Fourth Proportional to 2,639.11, 3,957.73 and 1,159.05

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Solution

The fourth proportional to 2,639.11, 3,957.73 and 1,159.05 is: 1,738.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.11 : 3,957.73 = 1,159.05 : x
  2. Step 2: Convert to fraction form
    2,639.11/3,957.73 = 1,159.05/x
  3. Step 3: Cross multiply
    2,639.11x = 3,957.73 × 1,159.05
  4. Step 4: Simplify right side
    2,639.11x = 4,587,206.96
  5. Step 5: Solve for x
    x = 4,587,206.96/2,639.11
  6. Step 6: Final answer
    x = 1,738.16

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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.