Home / 8,770.40-12,082.56-6,112.96

Finding the Fourth Proportional to 8,770.40, 12,082.56 and 6,112.96

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Solution

The fourth proportional to 8,770.40, 12,082.56 and 6,112.96 is: 8,421.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.40 : 12,082.56 = 6,112.96 : x
  2. Step 2: Convert to fraction form
    8,770.40/12,082.56 = 6,112.96/x
  3. Step 3: Cross multiply
    8,770.40x = 12,082.56 × 6,112.96
  4. Step 4: Simplify right side
    8,770.40x = 73,860,205.98
  5. Step 5: Solve for x
    x = 73,860,205.98/8,770.40
  6. Step 6: Final answer
    x = 8,421.53

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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.