Home / 2,761.12-3,809.32-1,642.11

Finding the Fourth Proportional to 2,761.12, 3,809.32 and 1,642.11

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Solution

The fourth proportional to 2,761.12, 3,809.32 and 1,642.11 is: 2,265.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.12 : 3,809.32 = 1,642.11 : x
  2. Step 2: Convert to fraction form
    2,761.12/3,809.32 = 1,642.11/x
  3. Step 3: Cross multiply
    2,761.12x = 3,809.32 × 1,642.11
  4. Step 4: Simplify right side
    2,761.12x = 6,255,322.47
  5. Step 5: Solve for x
    x = 6,255,322.47/2,761.12
  6. Step 6: Final answer
    x = 2,265.50

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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.