Home / 2,195.80-3,030.30-1,201.18

Finding the Fourth Proportional to 2,195.80, 3,030.30 and 1,201.18

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Solution

The fourth proportional to 2,195.80, 3,030.30 and 1,201.18 is: 1,657.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.80 : 3,030.30 = 1,201.18 : x
  2. Step 2: Convert to fraction form
    2,195.80/3,030.30 = 1,201.18/x
  3. Step 3: Cross multiply
    2,195.80x = 3,030.30 × 1,201.18
  4. Step 4: Simplify right side
    2,195.80x = 3,639,935.75
  5. Step 5: Solve for x
    x = 3,639,935.75/2,195.80
  6. Step 6: Final answer
    x = 1,657.68

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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.