Home / 1,928.55-2,660.67-1,181.91

Finding the Fourth Proportional to 1,928.55, 2,660.67 and 1,181.91

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Solution

The fourth proportional to 1,928.55, 2,660.67 and 1,181.91 is: 1,630.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.55 : 2,660.67 = 1,181.91 : x
  2. Step 2: Convert to fraction form
    1,928.55/2,660.67 = 1,181.91/x
  3. Step 3: Cross multiply
    1,928.55x = 2,660.67 × 1,181.91
  4. Step 4: Simplify right side
    1,928.55x = 3,144,672.48
  5. Step 5: Solve for x
    x = 3,144,672.48/1,928.55
  6. Step 6: Final answer
    x = 1,630.59

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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.