Home / 3,812.29-5,719.84-1,313.72

Finding the Fourth Proportional to 3,812.29, 5,719.84 and 1,313.72

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Solution

The fourth proportional to 3,812.29, 5,719.84 and 1,313.72 is: 1,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.29 : 5,719.84 = 1,313.72 : x
  2. Step 2: Convert to fraction form
    3,812.29/5,719.84 = 1,313.72/x
  3. Step 3: Cross multiply
    3,812.29x = 5,719.84 × 1,313.72
  4. Step 4: Simplify right side
    3,812.29x = 7,514,261.47
  5. Step 5: Solve for x
    x = 7,514,261.47/3,812.29
  6. Step 6: Final answer
    x = 1,971.06

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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.