Home / 8,687.15-11,987.54-4,910.12

Finding the Fourth Proportional to 8,687.15, 11,987.54 and 4,910.12

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Solution

The fourth proportional to 8,687.15, 11,987.54 and 4,910.12 is: 6,775.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.15 : 11,987.54 = 4,910.12 : x
  2. Step 2: Convert to fraction form
    8,687.15/11,987.54 = 4,910.12/x
  3. Step 3: Cross multiply
    8,687.15x = 11,987.54 × 4,910.12
  4. Step 4: Simplify right side
    8,687.15x = 58,860,266.40
  5. Step 5: Solve for x
    x = 58,860,266.40/8,687.15
  6. Step 6: Final answer
    x = 6,775.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.