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Finding the Fourth Proportional to 7,408.71, 10,218.24 and 4,423.89

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Solution

The fourth proportional to 7,408.71, 10,218.24 and 4,423.89 is: 6,101.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.71 : 10,218.24 = 4,423.89 : x
  2. Step 2: Convert to fraction form
    7,408.71/10,218.24 = 4,423.89/x
  3. Step 3: Cross multiply
    7,408.71x = 10,218.24 × 4,423.89
  4. Step 4: Simplify right side
    7,408.71x = 45,204,369.75
  5. Step 5: Solve for x
    x = 45,204,369.75/7,408.71
  6. Step 6: Final answer
    x = 6,101.52

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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.