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Finding the Fourth Proportional to 9,268.68, 12,790.80 and 5,019.79

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Solution

The fourth proportional to 9,268.68, 12,790.80 and 5,019.79 is: 6,927.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,268.68 : 12,790.80 = 5,019.79 : x
  2. Step 2: Convert to fraction form
    9,268.68/12,790.80 = 5,019.79/x
  3. Step 3: Cross multiply
    9,268.68x = 12,790.80 × 5,019.79
  4. Step 4: Simplify right side
    9,268.68x = 64,207,129.93
  5. Step 5: Solve for x
    x = 64,207,129.93/9,268.68
  6. Step 6: Final answer
    x = 6,927.32

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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.