Home / 2,208.15-3,311.40-746.91

Finding the Fourth Proportional to 2,208.15, 3,311.40 and 746.91

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Solution

The fourth proportional to 2,208.15, 3,311.40 and 746.91 is: 1,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.15 : 3,311.40 = 746.91 : x
  2. Step 2: Convert to fraction form
    2,208.15/3,311.40 = 746.91/x
  3. Step 3: Cross multiply
    2,208.15x = 3,311.40 × 746.91
  4. Step 4: Simplify right side
    2,208.15x = 2,473,317.77
  5. Step 5: Solve for x
    x = 2,473,317.77/2,208.15
  6. Step 6: Final answer
    x = 1,120.09

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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.