Home / 6,430.80-9,639.82-3,651.72

Finding the Fourth Proportional to 6,430.80, 9,639.82 and 3,651.72

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Solution

The fourth proportional to 6,430.80, 9,639.82 and 3,651.72 is: 5,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.80 : 9,639.82 = 3,651.72 : x
  2. Step 2: Convert to fraction form
    6,430.80/9,639.82 = 3,651.72/x
  3. Step 3: Cross multiply
    6,430.80x = 9,639.82 × 3,651.72
  4. Step 4: Simplify right side
    6,430.80x = 35,201,938.46
  5. Step 5: Solve for x
    x = 35,201,938.46/6,430.80
  6. Step 6: Final answer
    x = 5,473.96

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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.