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Finding the Fourth Proportional to 7,141.89, 10,713.14 and 2,211.63

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Solution

The fourth proportional to 7,141.89, 10,713.14 and 2,211.63 is: 3,317.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.89 : 10,713.14 = 2,211.63 : x
  2. Step 2: Convert to fraction form
    7,141.89/10,713.14 = 2,211.63/x
  3. Step 3: Cross multiply
    7,141.89x = 10,713.14 × 2,211.63
  4. Step 4: Simplify right side
    7,141.89x = 23,693,437.19
  5. Step 5: Solve for x
    x = 23,693,437.19/7,141.89
  6. Step 6: Final answer
    x = 3,317.53

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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.