Home / 2,211.75-3,052.53-1,280.25

Finding the Fourth Proportional to 2,211.75, 3,052.53 and 1,280.25

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Solution

The fourth proportional to 2,211.75, 3,052.53 and 1,280.25 is: 1,766.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.75 : 3,052.53 = 1,280.25 : x
  2. Step 2: Convert to fraction form
    2,211.75/3,052.53 = 1,280.25/x
  3. Step 3: Cross multiply
    2,211.75x = 3,052.53 × 1,280.25
  4. Step 4: Simplify right side
    2,211.75x = 3,908,001.53
  5. Step 5: Solve for x
    x = 3,908,001.53/2,211.75
  6. Step 6: Final answer
    x = 1,766.93

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Double scale
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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.