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Finding the Fourth Proportional to 6,639.55, 9,950.20 and 3,354.79

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Solution

The fourth proportional to 6,639.55, 9,950.20 and 3,354.79 is: 5,027.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.55 : 9,950.20 = 3,354.79 : x
  2. Step 2: Convert to fraction form
    6,639.55/9,950.20 = 3,354.79/x
  3. Step 3: Cross multiply
    6,639.55x = 9,950.20 × 3,354.79
  4. Step 4: Simplify right side
    6,639.55x = 33,380,831.46
  5. Step 5: Solve for x
    x = 33,380,831.46/6,639.55
  6. Step 6: Final answer
    x = 5,027.57

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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.