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Finding the Fourth Proportional to 6,641.79, 9,949.40 and 4,007.85

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Solution

The fourth proportional to 6,641.79, 9,949.40 and 4,007.85 is: 6,003.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.79 : 9,949.40 = 4,007.85 : x
  2. Step 2: Convert to fraction form
    6,641.79/9,949.40 = 4,007.85/x
  3. Step 3: Cross multiply
    6,641.79x = 9,949.40 × 4,007.85
  4. Step 4: Simplify right side
    6,641.79x = 39,875,682.75
  5. Step 5: Solve for x
    x = 39,875,682.75/6,641.79
  6. Step 6: Final answer
    x = 6,003.76

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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.