Home / 2,132.95-2,943.27-1,188.65

Finding the Fourth Proportional to 2,132.95, 2,943.27 and 1,188.65

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Solution

The fourth proportional to 2,132.95, 2,943.27 and 1,188.65 is: 1,640.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.95 : 2,943.27 = 1,188.65 : x
  2. Step 2: Convert to fraction form
    2,132.95/2,943.27 = 1,188.65/x
  3. Step 3: Cross multiply
    2,132.95x = 2,943.27 × 1,188.65
  4. Step 4: Simplify right side
    2,132.95x = 3,498,517.89
  5. Step 5: Solve for x
    x = 3,498,517.89/2,132.95
  6. Step 6: Final answer
    x = 1,640.22

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1.5x scale

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.