Home / 2,810.87-3,872.67-1,959.32

Finding the Fourth Proportional to 2,810.87, 3,872.67 and 1,959.32

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Solution

The fourth proportional to 2,810.87, 3,872.67 and 1,959.32 is: 2,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.87 : 3,872.67 = 1,959.32 : x
  2. Step 2: Convert to fraction form
    2,810.87/3,872.67 = 1,959.32/x
  3. Step 3: Cross multiply
    2,810.87x = 3,872.67 × 1,959.32
  4. Step 4: Simplify right side
    2,810.87x = 7,587,799.78
  5. Step 5: Solve for x
    x = 7,587,799.78/2,810.87
  6. Step 6: Final answer
    x = 2,699.45

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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.