Home / 2,802.12-3,866.90-1,543.15

Finding the Fourth Proportional to 2,802.12, 3,866.90 and 1,543.15

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Solution

The fourth proportional to 2,802.12, 3,866.90 and 1,543.15 is: 2,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.12 : 3,866.90 = 1,543.15 : x
  2. Step 2: Convert to fraction form
    2,802.12/3,866.90 = 1,543.15/x
  3. Step 3: Cross multiply
    2,802.12x = 3,866.90 × 1,543.15
  4. Step 4: Simplify right side
    2,802.12x = 5,967,212.54
  5. Step 5: Solve for x
    x = 5,967,212.54/2,802.12
  6. Step 6: Final answer
    x = 2,129.53

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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.