Home / 1,718.09-2,576.51-743.66

Finding the Fourth Proportional to 1,718.09, 2,576.51 and 743.66

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Solution

The fourth proportional to 1,718.09, 2,576.51 and 743.66 is: 1,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.09 : 2,576.51 = 743.66 : x
  2. Step 2: Convert to fraction form
    1,718.09/2,576.51 = 743.66/x
  3. Step 3: Cross multiply
    1,718.09x = 2,576.51 × 743.66
  4. Step 4: Simplify right side
    1,718.09x = 1,916,047.43
  5. Step 5: Solve for x
    x = 1,916,047.43/1,718.09
  6. Step 6: Final answer
    x = 1,115.22

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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.