Home / 1,321.52-1,823.58-1,181.18

Finding the Fourth Proportional to 1,321.52, 1,823.58 and 1,181.18

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Solution

The fourth proportional to 1,321.52, 1,823.58 and 1,181.18 is: 1,629.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321.52 : 1,823.58 = 1,181.18 : x
  2. Step 2: Convert to fraction form
    1,321.52/1,823.58 = 1,181.18/x
  3. Step 3: Cross multiply
    1,321.52x = 1,823.58 × 1,181.18
  4. Step 4: Simplify right side
    1,321.52x = 2,153,976.22
  5. Step 5: Solve for x
    x = 2,153,976.22/1,321.52
  6. Step 6: Final answer
    x = 1,629.92

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1.5x scale

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.