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Finding the Fourth Proportional to 7,422.46, 10,243.94 and 4,278.67

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Solution

The fourth proportional to 7,422.46, 10,243.94 and 4,278.67 is: 5,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,422.46 : 10,243.94 = 4,278.67 : x
  2. Step 2: Convert to fraction form
    7,422.46/10,243.94 = 4,278.67/x
  3. Step 3: Cross multiply
    7,422.46x = 10,243.94 × 4,278.67
  4. Step 4: Simplify right side
    7,422.46x = 43,830,438.76
  5. Step 5: Solve for x
    x = 43,830,438.76/7,422.46
  6. Step 6: Final answer
    x = 5,905.11

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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.