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Finding the Fourth Proportional to 8,991.45, 12,405.02 and 6,009.17

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Solution

The fourth proportional to 8,991.45, 12,405.02 and 6,009.17 is: 8,290.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.45 : 12,405.02 = 6,009.17 : x
  2. Step 2: Convert to fraction form
    8,991.45/12,405.02 = 6,009.17/x
  3. Step 3: Cross multiply
    8,991.45x = 12,405.02 × 6,009.17
  4. Step 4: Simplify right side
    8,991.45x = 74,543,781.96
  5. Step 5: Solve for x
    x = 74,543,781.96/8,991.45
  6. Step 6: Final answer
    x = 8,290.52

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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.