Home / 2,205.16-3,043.36-1,321.18

Finding the Fourth Proportional to 2,205.16, 3,043.36 and 1,321.18

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Solution

The fourth proportional to 2,205.16, 3,043.36 and 1,321.18 is: 1,823.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.16 : 3,043.36 = 1,321.18 : x
  2. Step 2: Convert to fraction form
    2,205.16/3,043.36 = 1,321.18/x
  3. Step 3: Cross multiply
    2,205.16x = 3,043.36 × 1,321.18
  4. Step 4: Simplify right side
    2,205.16x = 4,020,826.36
  5. Step 5: Solve for x
    x = 4,020,826.36/2,205.16
  6. Step 6: Final answer
    x = 1,823.37

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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.