Home / 7,984.13-11,977.65-2,718.87

Finding the Fourth Proportional to 7,984.13, 11,977.65 and 2,718.87

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Solution

The fourth proportional to 7,984.13, 11,977.65 and 2,718.87 is: 4,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.13 : 11,977.65 = 2,718.87 : x
  2. Step 2: Convert to fraction form
    7,984.13/11,977.65 = 2,718.87/x
  3. Step 3: Cross multiply
    7,984.13x = 11,977.65 × 2,718.87
  4. Step 4: Simplify right side
    7,984.13x = 32,565,659.66
  5. Step 5: Solve for x
    x = 32,565,659.66/7,984.13
  6. Step 6: Final answer
    x = 4,078.80

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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.