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Finding the Fourth Proportional to 8,009.32, 11,029.80 and 7,985.02

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Solution

The fourth proportional to 8,009.32, 11,029.80 and 7,985.02 is: 10,996.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,009.32 : 11,029.80 = 7,985.02 : x
  2. Step 2: Convert to fraction form
    8,009.32/11,029.80 = 7,985.02/x
  3. Step 3: Cross multiply
    8,009.32x = 11,029.80 × 7,985.02
  4. Step 4: Simplify right side
    8,009.32x = 88,073,173.60
  5. Step 5: Solve for x
    x = 88,073,173.60/8,009.32
  6. Step 6: Final answer
    x = 10,996.34

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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.