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Finding the Fourth Proportional to 6,405.40, 9,609.90 and 2,022.76

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Solution

The fourth proportional to 6,405.40, 9,609.90 and 2,022.76 is: 3,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.40 : 9,609.90 = 2,022.76 : x
  2. Step 2: Convert to fraction form
    6,405.40/9,609.90 = 2,022.76/x
  3. Step 3: Cross multiply
    6,405.40x = 9,609.90 × 2,022.76
  4. Step 4: Simplify right side
    6,405.40x = 19,438,521.32
  5. Step 5: Solve for x
    x = 19,438,521.32/6,405.40
  6. Step 6: Final answer
    x = 3,034.71

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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.