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Finding the Fourth Proportional to 3,165.77, 4,750.11 and 1,317.31

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Solution

The fourth proportional to 3,165.77, 4,750.11 and 1,317.31 is: 1,976.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.77 : 4,750.11 = 1,317.31 : x
  2. Step 2: Convert to fraction form
    3,165.77/4,750.11 = 1,317.31/x
  3. Step 3: Cross multiply
    3,165.77x = 4,750.11 × 1,317.31
  4. Step 4: Simplify right side
    3,165.77x = 6,257,355.53
  5. Step 5: Solve for x
    x = 6,257,355.53/3,165.77
  6. Step 6: Final answer
    x = 1,976.57

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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.