Home / 2,143.80-2,960.28-1,359.24

Finding the Fourth Proportional to 2,143.80, 2,960.28 and 1,359.24

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Solution

The fourth proportional to 2,143.80, 2,960.28 and 1,359.24 is: 1,876.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.80 : 2,960.28 = 1,359.24 : x
  2. Step 2: Convert to fraction form
    2,143.80/2,960.28 = 1,359.24/x
  3. Step 3: Cross multiply
    2,143.80x = 2,960.28 × 1,359.24
  4. Step 4: Simplify right side
    2,143.80x = 4,023,730.99
  5. Step 5: Solve for x
    x = 4,023,730.99/2,143.80
  6. Step 6: Final answer
    x = 1,876.92

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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.