Home / 7,987.17-11,985.36-3,306.33

Finding the Fourth Proportional to 7,987.17, 11,985.36 and 3,306.33

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Solution

The fourth proportional to 7,987.17, 11,985.36 and 3,306.33 is: 4,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.17 : 11,985.36 = 3,306.33 : x
  2. Step 2: Convert to fraction form
    7,987.17/11,985.36 = 3,306.33/x
  3. Step 3: Cross multiply
    7,987.17x = 11,985.36 × 3,306.33
  4. Step 4: Simplify right side
    7,987.17x = 39,627,555.33
  5. Step 5: Solve for x
    x = 39,627,555.33/7,987.17
  6. Step 6: Final answer
    x = 4,961.40

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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.