Home / 2,190.42-3,022.79-1,258.92

Finding the Fourth Proportional to 2,190.42, 3,022.79 and 1,258.92

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Solution

The fourth proportional to 2,190.42, 3,022.79 and 1,258.92 is: 1,737.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.42 : 3,022.79 = 1,258.92 : x
  2. Step 2: Convert to fraction form
    2,190.42/3,022.79 = 1,258.92/x
  3. Step 3: Cross multiply
    2,190.42x = 3,022.79 × 1,258.92
  4. Step 4: Simplify right side
    2,190.42x = 3,805,444.49
  5. Step 5: Solve for x
    x = 3,805,444.49/2,190.42
  6. Step 6: Final answer
    x = 1,737.31

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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.