Home / 9,278.35-12,804.20-5,245.38

Finding the Fourth Proportional to 9,278.35, 12,804.20 and 5,245.38

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Solution

The fourth proportional to 9,278.35, 12,804.20 and 5,245.38 is: 7,238.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.35 : 12,804.20 = 5,245.38 : x
  2. Step 2: Convert to fraction form
    9,278.35/12,804.20 = 5,245.38/x
  3. Step 3: Cross multiply
    9,278.35x = 12,804.20 × 5,245.38
  4. Step 4: Simplify right side
    9,278.35x = 67,162,938.80
  5. Step 5: Solve for x
    x = 67,162,938.80/9,278.35
  6. Step 6: Final answer
    x = 7,238.67

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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.