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Finding the Fourth Proportional to 1,812.48, 2,718.72 and 717.36

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Solution

The fourth proportional to 1,812.48, 2,718.72 and 717.36 is: 1,076.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.48 : 2,718.72 = 717.36 : x
  2. Step 2: Convert to fraction form
    1,812.48/2,718.72 = 717.36/x
  3. Step 3: Cross multiply
    1,812.48x = 2,718.72 × 717.36
  4. Step 4: Simplify right side
    1,812.48x = 1,950,300.98
  5. Step 5: Solve for x
    x = 1,950,300.98/1,812.48
  6. Step 6: Final answer
    x = 1,076.04

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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.