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Finding the Fourth Proportional to 9,364.80, 12,926.03 and 5,387.19

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Solution

The fourth proportional to 9,364.80, 12,926.03 and 5,387.19 is: 7,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,364.80 : 12,926.03 = 5,387.19 : x
  2. Step 2: Convert to fraction form
    9,364.80/12,926.03 = 5,387.19/x
  3. Step 3: Cross multiply
    9,364.80x = 12,926.03 × 5,387.19
  4. Step 4: Simplify right side
    9,364.80x = 69,634,952.62
  5. Step 5: Solve for x
    x = 69,634,952.62/9,364.80
  6. Step 6: Final answer
    x = 7,435.82

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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.