Home / 8,921.31-13,381.98-2,681.37

Finding the Fourth Proportional to 8,921.31, 13,381.98 and 2,681.37

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Solution

The fourth proportional to 8,921.31, 13,381.98 and 2,681.37 is: 4,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.31 : 13,381.98 = 2,681.37 : x
  2. Step 2: Convert to fraction form
    8,921.31/13,381.98 = 2,681.37/x
  3. Step 3: Cross multiply
    8,921.31x = 13,381.98 × 2,681.37
  4. Step 4: Simplify right side
    8,921.31x = 35,882,029.66
  5. Step 5: Solve for x
    x = 35,882,029.66/8,921.31
  6. Step 6: Final answer
    x = 4,022.06

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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.