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Finding the Fourth Proportional to 9,275.55, 12,799.80 and 5,242.29

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Solution

The fourth proportional to 9,275.55, 12,799.80 and 5,242.29 is: 7,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,275.55 : 12,799.80 = 5,242.29 : x
  2. Step 2: Convert to fraction form
    9,275.55/12,799.80 = 5,242.29/x
  3. Step 3: Cross multiply
    9,275.55x = 12,799.80 × 5,242.29
  4. Step 4: Simplify right side
    9,275.55x = 67,100,263.54
  5. Step 5: Solve for x
    x = 67,100,263.54/9,275.55
  6. Step 6: Final answer
    x = 7,234.10

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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.