Home / 7,811.31-11,718.65-2,880.97

Finding the Fourth Proportional to 7,811.31, 11,718.65 and 2,880.97

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Solution

The fourth proportional to 7,811.31, 11,718.65 and 2,880.97 is: 4,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.31 : 11,718.65 = 2,880.97 : x
  2. Step 2: Convert to fraction form
    7,811.31/11,718.65 = 2,880.97/x
  3. Step 3: Cross multiply
    7,811.31x = 11,718.65 × 2,880.97
  4. Step 4: Simplify right side
    7,811.31x = 33,761,079.09
  5. Step 5: Solve for x
    x = 33,761,079.09/7,811.31
  6. Step 6: Final answer
    x = 4,322.08

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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.