Home / 8,717.40-13,081.59-3,171.12

Finding the Fourth Proportional to 8,717.40, 13,081.59 and 3,171.12

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Solution

The fourth proportional to 8,717.40, 13,081.59 and 3,171.12 is: 4,758.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.40 : 13,081.59 = 3,171.12 : x
  2. Step 2: Convert to fraction form
    8,717.40/13,081.59 = 3,171.12/x
  3. Step 3: Cross multiply
    8,717.40x = 13,081.59 × 3,171.12
  4. Step 4: Simplify right side
    8,717.40x = 41,483,291.68
  5. Step 5: Solve for x
    x = 41,483,291.68/8,717.40
  6. Step 6: Final answer
    x = 4,758.68

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1.5x scale

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.