Home / 9,251.78-12,766.32-5,272.40

Finding the Fourth Proportional to 9,251.78, 12,766.32 and 5,272.40

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Solution

The fourth proportional to 9,251.78, 12,766.32 and 5,272.40 is: 7,275.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,251.78 : 12,766.32 = 5,272.40 : x
  2. Step 2: Convert to fraction form
    9,251.78/12,766.32 = 5,272.40/x
  3. Step 3: Cross multiply
    9,251.78x = 12,766.32 × 5,272.40
  4. Step 4: Simplify right side
    9,251.78x = 67,309,145.57
  5. Step 5: Solve for x
    x = 67,309,145.57/9,251.78
  6. Step 6: Final answer
    x = 7,275.26

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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.