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Finding the Fourth Proportional to 10,270, 15,405.45 and 3,344.50

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Solution

The fourth proportional to 10,270, 15,405.45 and 3,344.50 is: 5,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,270 : 15,405.45 = 3,344.50 : x
  2. Step 2: Convert to fraction form
    10,270/15,405.45 = 3,344.50/x
  3. Step 3: Cross multiply
    10,270x = 15,405.45 × 3,344.50
  4. Step 4: Simplify right side
    10,270x = 51,523,527.53
  5. Step 5: Solve for x
    x = 51,523,527.53/10,270
  6. Step 6: Final answer
    x = 5,016.90

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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.