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Finding the Fourth Proportional to 8,884.92, 12,256.60 and 7,208.20

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Solution

The fourth proportional to 8,884.92, 12,256.60 and 7,208.20 is: 9,943.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,884.92 : 12,256.60 = 7,208.20 : x
  2. Step 2: Convert to fraction form
    8,884.92/12,256.60 = 7,208.20/x
  3. Step 3: Cross multiply
    8,884.92x = 12,256.60 × 7,208.20
  4. Step 4: Simplify right side
    8,884.92x = 88,348,024.12
  5. Step 5: Solve for x
    x = 88,348,024.12/8,884.92
  6. Step 6: Final answer
    x = 9,943.59

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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.