Home / 2,145.42-3,218.16-1,177.62

Finding the Fourth Proportional to 2,145.42, 3,218.16 and 1,177.62

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Solution

The fourth proportional to 2,145.42, 3,218.16 and 1,177.62 is: 1,766.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.42 : 3,218.16 = 1,177.62 : x
  2. Step 2: Convert to fraction form
    2,145.42/3,218.16 = 1,177.62/x
  3. Step 3: Cross multiply
    2,145.42x = 3,218.16 × 1,177.62
  4. Step 4: Simplify right side
    2,145.42x = 3,789,769.58
  5. Step 5: Solve for x
    x = 3,789,769.58/2,145.42
  6. Step 6: Final answer
    x = 1,766.45

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1.5x scale

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.