Home / 2,624.85-3,621.38-1,680.80

Finding the Fourth Proportional to 2,624.85, 3,621.38 and 1,680.80

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Solution

The fourth proportional to 2,624.85, 3,621.38 and 1,680.80 is: 2,318.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,624.85 : 3,621.38 = 1,680.80 : x
  2. Step 2: Convert to fraction form
    2,624.85/3,621.38 = 1,680.80/x
  3. Step 3: Cross multiply
    2,624.85x = 3,621.38 × 1,680.80
  4. Step 4: Simplify right side
    2,624.85x = 6,086,788.99
  5. Step 5: Solve for x
    x = 6,086,788.99/2,624.85
  6. Step 6: Final answer
    x = 2,318.91

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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.