Home / 2,639.35-3,649.26-2,311.30

Finding the Fourth Proportional to 2,639.35, 3,649.26 and 2,311.30

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Solution

The fourth proportional to 2,639.35, 3,649.26 and 2,311.30 is: 3,195.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.35 : 3,649.26 = 2,311.30 : x
  2. Step 2: Convert to fraction form
    2,639.35/3,649.26 = 2,311.30/x
  3. Step 3: Cross multiply
    2,639.35x = 3,649.26 × 2,311.30
  4. Step 4: Simplify right side
    2,639.35x = 8,434,534.64
  5. Step 5: Solve for x
    x = 8,434,534.64/2,639.35
  6. Step 6: Final answer
    x = 3,195.69

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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.