Home / 2,802.45-3,867.31-1,543.47

Finding the Fourth Proportional to 2,802.45, 3,867.31 and 1,543.47

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Solution

The fourth proportional to 2,802.45, 3,867.31 and 1,543.47 is: 2,129.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.45 : 3,867.31 = 1,543.47 : x
  2. Step 2: Convert to fraction form
    2,802.45/3,867.31 = 1,543.47/x
  3. Step 3: Cross multiply
    2,802.45x = 3,867.31 × 1,543.47
  4. Step 4: Simplify right side
    2,802.45x = 5,969,076.97
  5. Step 5: Solve for x
    x = 5,969,076.97/2,802.45
  6. Step 6: Final answer
    x = 2,129.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.