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Finding the Fourth Proportional to 9,366.86, 12,926.25 and 5,387.87

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Solution

The fourth proportional to 9,366.86, 12,926.25 and 5,387.87 is: 7,435.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,366.86 : 12,926.25 = 5,387.87 : x
  2. Step 2: Convert to fraction form
    9,366.86/12,926.25 = 5,387.87/x
  3. Step 3: Cross multiply
    9,366.86x = 12,926.25 × 5,387.87
  4. Step 4: Simplify right side
    9,366.86x = 69,644,889.96
  5. Step 5: Solve for x
    x = 69,644,889.96/9,366.86
  6. Step 6: Final answer
    x = 7,435.25

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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.