Home / 8,971.29-12,378.83-5,613.03

Finding the Fourth Proportional to 8,971.29, 12,378.83 and 5,613.03

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Solution

The fourth proportional to 8,971.29, 12,378.83 and 5,613.03 is: 7,745.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.29 : 12,378.83 = 5,613.03 : x
  2. Step 2: Convert to fraction form
    8,971.29/12,378.83 = 5,613.03/x
  3. Step 3: Cross multiply
    8,971.29x = 12,378.83 × 5,613.03
  4. Step 4: Simplify right side
    8,971.29x = 69,482,716.09
  5. Step 5: Solve for x
    x = 69,482,716.09/8,971.29
  6. Step 6: Final answer
    x = 7,745.01

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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.