Home / 7,140.29-10,704.76-3,240.14

Finding the Fourth Proportional to 7,140.29, 10,704.76 and 3,240.14

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Solution

The fourth proportional to 7,140.29, 10,704.76 and 3,240.14 is: 4,857.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.29 : 10,704.76 = 3,240.14 : x
  2. Step 2: Convert to fraction form
    7,140.29/10,704.76 = 3,240.14/x
  3. Step 3: Cross multiply
    7,140.29x = 10,704.76 × 3,240.14
  4. Step 4: Simplify right side
    7,140.29x = 34,684,859.44
  5. Step 5: Solve for x
    x = 34,684,859.44/7,140.29
  6. Step 6: Final answer
    x = 4,857.63

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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.