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Finding the Fourth Proportional to 6,443.91, 9,665.87 and 1,763.57

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Solution

The fourth proportional to 6,443.91, 9,665.87 and 1,763.57 is: 2,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.91 : 9,665.87 = 1,763.57 : x
  2. Step 2: Convert to fraction form
    6,443.91/9,665.87 = 1,763.57/x
  3. Step 3: Cross multiply
    6,443.91x = 9,665.87 × 1,763.57
  4. Step 4: Simplify right side
    6,443.91x = 17,046,438.36
  5. Step 5: Solve for x
    x = 17,046,438.36/6,443.91
  6. Step 6: Final answer
    x = 2,645.36

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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.