Home / 7,275.31-10,916.21-3,811.75

Finding the Fourth Proportional to 7,275.31, 10,916.21 and 3,811.75

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Solution

The fourth proportional to 7,275.31, 10,916.21 and 3,811.75 is: 5,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.31 : 10,916.21 = 3,811.75 : x
  2. Step 2: Convert to fraction form
    7,275.31/10,916.21 = 3,811.75/x
  3. Step 3: Cross multiply
    7,275.31x = 10,916.21 × 3,811.75
  4. Step 4: Simplify right side
    7,275.31x = 41,609,863.47
  5. Step 5: Solve for x
    x = 41,609,863.47/7,275.31
  6. Step 6: Final answer
    x = 5,719.33

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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.