Home / 1,517.03-2,271.90-865.79

Finding the Fourth Proportional to 1,517.03, 2,271.90 and 865.79

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Solution

The fourth proportional to 1,517.03, 2,271.90 and 865.79 is: 1,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.03 : 2,271.90 = 865.79 : x
  2. Step 2: Convert to fraction form
    1,517.03/2,271.90 = 865.79/x
  3. Step 3: Cross multiply
    1,517.03x = 2,271.90 × 865.79
  4. Step 4: Simplify right side
    1,517.03x = 1,966,988.30
  5. Step 5: Solve for x
    x = 1,966,988.30/1,517.03
  6. Step 6: Final answer
    x = 1,296.60

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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.