Home / 7,142.40-10,716.66-2,762.94

Finding the Fourth Proportional to 7,142.40, 10,716.66 and 2,762.94

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Solution

The fourth proportional to 7,142.40, 10,716.66 and 2,762.94 is: 4,145.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.40 : 10,716.66 = 2,762.94 : x
  2. Step 2: Convert to fraction form
    7,142.40/10,716.66 = 2,762.94/x
  3. Step 3: Cross multiply
    7,142.40x = 10,716.66 × 2,762.94
  4. Step 4: Simplify right side
    7,142.40x = 29,609,488.58
  5. Step 5: Solve for x
    x = 29,609,488.58/7,142.40
  6. Step 6: Final answer
    x = 4,145.59

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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.