Home / 8,871.72-13,307.49-2,631.78

Finding the Fourth Proportional to 8,871.72, 13,307.49 and 2,631.78

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Solution

The fourth proportional to 8,871.72, 13,307.49 and 2,631.78 is: 3,947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.72 : 13,307.49 = 2,631.78 : x
  2. Step 2: Convert to fraction form
    8,871.72/13,307.49 = 2,631.78/x
  3. Step 3: Cross multiply
    8,871.72x = 13,307.49 × 2,631.78
  4. Step 4: Simplify right side
    8,871.72x = 35,022,386.03
  5. Step 5: Solve for x
    x = 35,022,386.03/8,871.72
  6. Step 6: Final answer
    x = 3,947.64

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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.