Home / 7,143.96-10,708.60-2,986.40

Finding the Fourth Proportional to 7,143.96, 10,708.60 and 2,986.40

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Solution

The fourth proportional to 7,143.96, 10,708.60 and 2,986.40 is: 4,476.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.96 : 10,708.60 = 2,986.40 : x
  2. Step 2: Convert to fraction form
    7,143.96/10,708.60 = 2,986.40/x
  3. Step 3: Cross multiply
    7,143.96x = 10,708.60 × 2,986.40
  4. Step 4: Simplify right side
    7,143.96x = 31,980,163.04
  5. Step 5: Solve for x
    x = 31,980,163.04/7,143.96
  6. Step 6: Final answer
    x = 4,476.53

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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.