Home / 1,156.80-1,730.88-1,143.84

Finding the Fourth Proportional to 1,156.80, 1,730.88 and 1,143.84

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Solution

The fourth proportional to 1,156.80, 1,730.88 and 1,143.84 is: 1,711.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.80 : 1,730.88 = 1,143.84 : x
  2. Step 2: Convert to fraction form
    1,156.80/1,730.88 = 1,143.84/x
  3. Step 3: Cross multiply
    1,156.80x = 1,730.88 × 1,143.84
  4. Step 4: Simplify right side
    1,156.80x = 1,979,849.78
  5. Step 5: Solve for x
    x = 1,979,849.78/1,156.80
  6. Step 6: Final answer
    x = 1,711.49

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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.