Home / 2,230.17-3,345.21-769.28

Finding the Fourth Proportional to 2,230.17, 3,345.21 and 769.28

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Solution

The fourth proportional to 2,230.17, 3,345.21 and 769.28 is: 1,153.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.17 : 3,345.21 = 769.28 : x
  2. Step 2: Convert to fraction form
    2,230.17/3,345.21 = 769.28/x
  3. Step 3: Cross multiply
    2,230.17x = 3,345.21 × 769.28
  4. Step 4: Simplify right side
    2,230.17x = 2,573,386.42
  5. Step 5: Solve for x
    x = 2,573,386.42/2,230.17
  6. Step 6: Final answer
    x = 1,153.90

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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.