Home / 2,661.17-3,985.66-1,275.47

Finding the Fourth Proportional to 2,661.17, 3,985.66 and 1,275.47

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Solution

The fourth proportional to 2,661.17, 3,985.66 and 1,275.47 is: 1,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.17 : 3,985.66 = 1,275.47 : x
  2. Step 2: Convert to fraction form
    2,661.17/3,985.66 = 1,275.47/x
  3. Step 3: Cross multiply
    2,661.17x = 3,985.66 × 1,275.47
  4. Step 4: Simplify right side
    2,661.17x = 5,083,589.76
  5. Step 5: Solve for x
    x = 5,083,589.76/2,661.17
  6. Step 6: Final answer
    x = 1,910.28

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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.