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Finding the Fourth Proportional to 6,628.43, 9,941.87 and 4,155.71

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Solution

The fourth proportional to 6,628.43, 9,941.87 and 4,155.71 is: 6,233.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.43 : 9,941.87 = 4,155.71 : x
  2. Step 2: Convert to fraction form
    6,628.43/9,941.87 = 4,155.71/x
  3. Step 3: Cross multiply
    6,628.43x = 9,941.87 × 4,155.71
  4. Step 4: Simplify right side
    6,628.43x = 41,315,489.26
  5. Step 5: Solve for x
    x = 41,315,489.26/6,628.43
  6. Step 6: Final answer
    x = 6,233.07

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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.