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Finding the Fourth Proportional to 3,188.86, 4,400.56 and 1,772.56

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Solution

The fourth proportional to 3,188.86, 4,400.56 and 1,772.56 is: 2,446.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.86 : 4,400.56 = 1,772.56 : x
  2. Step 2: Convert to fraction form
    3,188.86/4,400.56 = 1,772.56/x
  3. Step 3: Cross multiply
    3,188.86x = 4,400.56 × 1,772.56
  4. Step 4: Simplify right side
    3,188.86x = 7,800,256.63
  5. Step 5: Solve for x
    x = 7,800,256.63/3,188.86
  6. Step 6: Final answer
    x = 2,446.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.