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Finding the Fourth Proportional to 9,326.68, 12,826.71 and 7,415.79

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Solution

The fourth proportional to 9,326.68, 12,826.71 and 7,415.79 is: 10,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,326.68 : 12,826.71 = 7,415.79 : x
  2. Step 2: Convert to fraction form
    9,326.68/12,826.71 = 7,415.79/x
  3. Step 3: Cross multiply
    9,326.68x = 12,826.71 × 7,415.79
  4. Step 4: Simplify right side
    9,326.68x = 95,120,187.75
  5. Step 5: Solve for x
    x = 95,120,187.75/9,326.68
  6. Step 6: Final answer
    x = 10,198.72

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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.