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Finding the Fourth Proportional to 7,325.61, 10,109.31 and 3,968.42

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Solution

The fourth proportional to 7,325.61, 10,109.31 and 3,968.42 is: 5,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.61 : 10,109.31 = 3,968.42 : x
  2. Step 2: Convert to fraction form
    7,325.61/10,109.31 = 3,968.42/x
  3. Step 3: Cross multiply
    7,325.61x = 10,109.31 × 3,968.42
  4. Step 4: Simplify right side
    7,325.61x = 40,117,987.99
  5. Step 5: Solve for x
    x = 40,117,987.99/7,325.61
  6. Step 6: Final answer
    x = 5,476.40

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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.