Home / 7,275.23-10,917.63-3,990.63

Finding the Fourth Proportional to 7,275.23, 10,917.63 and 3,990.63

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Solution

The fourth proportional to 7,275.23, 10,917.63 and 3,990.63 is: 5,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.23 : 10,917.63 = 3,990.63 : x
  2. Step 2: Convert to fraction form
    7,275.23/10,917.63 = 3,990.63/x
  3. Step 3: Cross multiply
    7,275.23x = 10,917.63 × 3,990.63
  4. Step 4: Simplify right side
    7,275.23x = 43,568,221.81
  5. Step 5: Solve for x
    x = 43,568,221.81/7,275.23
  6. Step 6: Final answer
    x = 5,988.57

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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.