Home / 8,691.22-13,036.83-2,117.40

Finding the Fourth Proportional to 8,691.22, 13,036.83 and 2,117.40

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Solution

The fourth proportional to 8,691.22, 13,036.83 and 2,117.40 is: 3,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.22 : 13,036.83 = 2,117.40 : x
  2. Step 2: Convert to fraction form
    8,691.22/13,036.83 = 2,117.40/x
  3. Step 3: Cross multiply
    8,691.22x = 13,036.83 × 2,117.40
  4. Step 4: Simplify right side
    8,691.22x = 27,604,183.84
  5. Step 5: Solve for x
    x = 27,604,183.84/8,691.22
  6. Step 6: Final answer
    x = 3,176.10

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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.