Home / 8,921.33-13,381.48-2,681.21

Finding the Fourth Proportional to 8,921.33, 13,381.48 and 2,681.21

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Solution

The fourth proportional to 8,921.33, 13,381.48 and 2,681.21 is: 4,021.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.33 : 13,381.48 = 2,681.21 : x
  2. Step 2: Convert to fraction form
    8,921.33/13,381.48 = 2,681.21/x
  3. Step 3: Cross multiply
    8,921.33x = 13,381.48 × 2,681.21
  4. Step 4: Simplify right side
    8,921.33x = 35,878,557.99
  5. Step 5: Solve for x
    x = 35,878,557.99/8,921.33
  6. Step 6: Final answer
    x = 4,021.66

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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.