Home / 8,169.12-11,268.54-4,629.78

Finding the Fourth Proportional to 8,169.12, 11,268.54 and 4,629.78

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Solution

The fourth proportional to 8,169.12, 11,268.54 and 4,629.78 is: 6,386.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.12 : 11,268.54 = 4,629.78 : x
  2. Step 2: Convert to fraction form
    8,169.12/11,268.54 = 4,629.78/x
  3. Step 3: Cross multiply
    8,169.12x = 11,268.54 × 4,629.78
  4. Step 4: Simplify right side
    8,169.12x = 52,170,861.12
  5. Step 5: Solve for x
    x = 52,170,861.12/8,169.12
  6. Step 6: Final answer
    x = 6,386.35

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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.