Home / 3,905.10-5,856.80-1,131.18

Finding the Fourth Proportional to 3,905.10, 5,856.80 and 1,131.18

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Solution

The fourth proportional to 3,905.10, 5,856.80 and 1,131.18 is: 1,696.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.10 : 5,856.80 = 1,131.18 : x
  2. Step 2: Convert to fraction form
    3,905.10/5,856.80 = 1,131.18/x
  3. Step 3: Cross multiply
    3,905.10x = 5,856.80 × 1,131.18
  4. Step 4: Simplify right side
    3,905.10x = 6,625,095.02
  5. Step 5: Solve for x
    x = 6,625,095.02/3,905.10
  6. Step 6: Final answer
    x = 1,696.52

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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.