Home / 2,156.16-3,233.45-769.13

Finding the Fourth Proportional to 2,156.16, 3,233.45 and 769.13

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Solution

The fourth proportional to 2,156.16, 3,233.45 and 769.13 is: 1,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.16 : 3,233.45 = 769.13 : x
  2. Step 2: Convert to fraction form
    2,156.16/3,233.45 = 769.13/x
  3. Step 3: Cross multiply
    2,156.16x = 3,233.45 × 769.13
  4. Step 4: Simplify right side
    2,156.16x = 2,486,923.39
  5. Step 5: Solve for x
    x = 2,486,923.39/2,156.16
  6. Step 6: Final answer
    x = 1,153.40

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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.