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Finding the Fourth Proportional to 5,607.42, 8,401.56 and 3,960.79

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Solution

The fourth proportional to 5,607.42, 8,401.56 and 3,960.79 is: 5,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.42 : 8,401.56 = 3,960.79 : x
  2. Step 2: Convert to fraction form
    5,607.42/8,401.56 = 3,960.79/x
  3. Step 3: Cross multiply
    5,607.42x = 8,401.56 × 3,960.79
  4. Step 4: Simplify right side
    5,607.42x = 33,276,845.74
  5. Step 5: Solve for x
    x = 33,276,845.74/5,607.42
  6. Step 6: Final answer
    x = 5,934.43

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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.