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Finding the Fourth Proportional to 8,889.78, 12,268.08 and 5,352.24

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Solution

The fourth proportional to 8,889.78, 12,268.08 and 5,352.24 is: 7,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.78 : 12,268.08 = 5,352.24 : x
  2. Step 2: Convert to fraction form
    8,889.78/12,268.08 = 5,352.24/x
  3. Step 3: Cross multiply
    8,889.78x = 12,268.08 × 5,352.24
  4. Step 4: Simplify right side
    8,889.78x = 65,661,708.50
  5. Step 5: Solve for x
    x = 65,661,708.50/8,889.78
  6. Step 6: Final answer
    x = 7,386.20

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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.