Home / 2,621.20-3,931.78-1,645.24

Finding the Fourth Proportional to 2,621.20, 3,931.78 and 1,645.24

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Solution

The fourth proportional to 2,621.20, 3,931.78 and 1,645.24 is: 2,467.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.20 : 3,931.78 = 1,645.24 : x
  2. Step 2: Convert to fraction form
    2,621.20/3,931.78 = 1,645.24/x
  3. Step 3: Cross multiply
    2,621.20x = 3,931.78 × 1,645.24
  4. Step 4: Simplify right side
    2,621.20x = 6,468,721.73
  5. Step 5: Solve for x
    x = 6,468,721.73/2,621.20
  6. Step 6: Final answer
    x = 2,467.85

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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.