Home / 1,322.31-1,821.96-1,085.46

Finding the Fourth Proportional to 1,322.31, 1,821.96 and 1,085.46

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Solution

The fourth proportional to 1,322.31, 1,821.96 and 1,085.46 is: 1,495.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.31 : 1,821.96 = 1,085.46 : x
  2. Step 2: Convert to fraction form
    1,322.31/1,821.96 = 1,085.46/x
  3. Step 3: Cross multiply
    1,322.31x = 1,821.96 × 1,085.46
  4. Step 4: Simplify right side
    1,322.31x = 1,977,664.70
  5. Step 5: Solve for x
    x = 1,977,664.70/1,322.31
  6. Step 6: Final answer
    x = 1,495.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.