Home / 2,520.57-3,780.86-1,222.23

Finding the Fourth Proportional to 2,520.57, 3,780.86 and 1,222.23

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Solution

The fourth proportional to 2,520.57, 3,780.86 and 1,222.23 is: 1,833.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.57 : 3,780.86 = 1,222.23 : x
  2. Step 2: Convert to fraction form
    2,520.57/3,780.86 = 1,222.23/x
  3. Step 3: Cross multiply
    2,520.57x = 3,780.86 × 1,222.23
  4. Step 4: Simplify right side
    2,520.57x = 4,621,074.41
  5. Step 5: Solve for x
    x = 4,621,074.41/2,520.57
  6. Step 6: Final answer
    x = 1,833.35

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Half scale
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Double scale
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Similar ratio
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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.