Home / 3,876.19-5,812.47-1,409.29

Finding the Fourth Proportional to 3,876.19, 5,812.47 and 1,409.29

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Solution

The fourth proportional to 3,876.19, 5,812.47 and 1,409.29 is: 2,113.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.19 : 5,812.47 = 1,409.29 : x
  2. Step 2: Convert to fraction form
    3,876.19/5,812.47 = 1,409.29/x
  3. Step 3: Cross multiply
    3,876.19x = 5,812.47 × 1,409.29
  4. Step 4: Simplify right side
    3,876.19x = 8,191,455.85
  5. Step 5: Solve for x
    x = 8,191,455.85/3,876.19
  6. Step 6: Final answer
    x = 2,113.28

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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.