Home / 1,812.63-2,717.20-579.15

Finding the Fourth Proportional to 1,812.63, 2,717.20 and 579.15

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Solution

The fourth proportional to 1,812.63, 2,717.20 and 579.15 is: 868.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.63 : 2,717.20 = 579.15 : x
  2. Step 2: Convert to fraction form
    1,812.63/2,717.20 = 579.15/x
  3. Step 3: Cross multiply
    1,812.63x = 2,717.20 × 579.15
  4. Step 4: Simplify right side
    1,812.63x = 1,573,663.85
  5. Step 5: Solve for x
    x = 1,573,663.85/1,812.63
  6. Step 6: Final answer
    x = 868.17

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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.