Home / 1,540.37-2,311.38-718.44

Finding the Fourth Proportional to 1,540.37, 2,311.38 and 718.44

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Solution

The fourth proportional to 1,540.37, 2,311.38 and 718.44 is: 1,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.37 : 2,311.38 = 718.44 : x
  2. Step 2: Convert to fraction form
    1,540.37/2,311.38 = 718.44/x
  3. Step 3: Cross multiply
    1,540.37x = 2,311.38 × 718.44
  4. Step 4: Simplify right side
    1,540.37x = 1,660,587.85
  5. Step 5: Solve for x
    x = 1,660,587.85/1,540.37
  6. Step 6: Final answer
    x = 1,078.05

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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.