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Finding the Fourth Proportional to 6,438.46, 9,662.02 and 2,278.45

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Solution

The fourth proportional to 6,438.46, 9,662.02 and 2,278.45 is: 3,419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.46 : 9,662.02 = 2,278.45 : x
  2. Step 2: Convert to fraction form
    6,438.46/9,662.02 = 2,278.45/x
  3. Step 3: Cross multiply
    6,438.46x = 9,662.02 × 2,278.45
  4. Step 4: Simplify right side
    6,438.46x = 22,014,423.77
  5. Step 5: Solve for x
    x = 22,014,423.77/6,438.46
  6. Step 6: Final answer
    x = 3,419.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.