Home / 1,216.13-1,822.43-660.37

Finding the Fourth Proportional to 1,216.13, 1,822.43 and 660.37

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Solution

The fourth proportional to 1,216.13, 1,822.43 and 660.37 is: 989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.13 : 1,822.43 = 660.37 : x
  2. Step 2: Convert to fraction form
    1,216.13/1,822.43 = 660.37/x
  3. Step 3: Cross multiply
    1,216.13x = 1,822.43 × 660.37
  4. Step 4: Simplify right side
    1,216.13x = 1,203,478.10
  5. Step 5: Solve for x
    x = 1,203,478.10/1,216.13
  6. Step 6: Final answer
    x = 989.60

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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.