Home / 8,164.12-11,269.92-5,515.12

Finding the Fourth Proportional to 8,164.12, 11,269.92 and 5,515.12

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Solution

The fourth proportional to 8,164.12, 11,269.92 and 5,515.12 is: 7,613.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,164.12 : 11,269.92 = 5,515.12 : x
  2. Step 2: Convert to fraction form
    8,164.12/11,269.92 = 5,515.12/x
  3. Step 3: Cross multiply
    8,164.12x = 11,269.92 × 5,515.12
  4. Step 4: Simplify right side
    8,164.12x = 62,154,961.19
  5. Step 5: Solve for x
    x = 62,154,961.19/8,164.12
  6. Step 6: Final answer
    x = 7,613.19

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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.