Home / 2,177.27-3,005.15-1,338.51

Finding the Fourth Proportional to 2,177.27, 3,005.15 and 1,338.51

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Solution

The fourth proportional to 2,177.27, 3,005.15 and 1,338.51 is: 1,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.27 : 3,005.15 = 1,338.51 : x
  2. Step 2: Convert to fraction form
    2,177.27/3,005.15 = 1,338.51/x
  3. Step 3: Cross multiply
    2,177.27x = 3,005.15 × 1,338.51
  4. Step 4: Simplify right side
    2,177.27x = 4,022,416.63
  5. Step 5: Solve for x
    x = 4,022,416.63/2,177.27
  6. Step 6: Final answer
    x = 1,847.46

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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.