Home / 1,920.55-2,650.39-1,134.60

Finding the Fourth Proportional to 1,920.55, 2,650.39 and 1,134.60

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Solution

The fourth proportional to 1,920.55, 2,650.39 and 1,134.60 is: 1,565.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.55 : 2,650.39 = 1,134.60 : x
  2. Step 2: Convert to fraction form
    1,920.55/2,650.39 = 1,134.60/x
  3. Step 3: Cross multiply
    1,920.55x = 2,650.39 × 1,134.60
  4. Step 4: Simplify right side
    1,920.55x = 3,007,119.24
  5. Step 5: Solve for x
    x = 3,007,119.24/1,920.55
  6. Step 6: Final answer
    x = 1,565.76

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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.