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Finding the Fourth Proportional to 7,225.78, 9,971.76 and 4,241.74

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Solution

The fourth proportional to 7,225.78, 9,971.76 and 4,241.74 is: 5,853.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.78 : 9,971.76 = 4,241.74 : x
  2. Step 2: Convert to fraction form
    7,225.78/9,971.76 = 4,241.74/x
  3. Step 3: Cross multiply
    7,225.78x = 9,971.76 × 4,241.74
  4. Step 4: Simplify right side
    7,225.78x = 42,297,613.26
  5. Step 5: Solve for x
    x = 42,297,613.26/7,225.78
  6. Step 6: Final answer
    x = 5,853.71

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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.