Home / 8,817.70-12,168.06-5,278.84

Finding the Fourth Proportional to 8,817.70, 12,168.06 and 5,278.84

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Solution

The fourth proportional to 8,817.70, 12,168.06 and 5,278.84 is: 7,284.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.70 : 12,168.06 = 5,278.84 : x
  2. Step 2: Convert to fraction form
    8,817.70/12,168.06 = 5,278.84/x
  3. Step 3: Cross multiply
    8,817.70x = 12,168.06 × 5,278.84
  4. Step 4: Simplify right side
    8,817.70x = 64,233,241.85
  5. Step 5: Solve for x
    x = 64,233,241.85/8,817.70
  6. Step 6: Final answer
    x = 7,284.58

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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.