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Finding the Fourth Proportional to 2,616.65, 3,611.40 and 2,020.01

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Solution

The fourth proportional to 2,616.65, 3,611.40 and 2,020.01 is: 2,787.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.65 : 3,611.40 = 2,020.01 : x
  2. Step 2: Convert to fraction form
    2,616.65/3,611.40 = 2,020.01/x
  3. Step 3: Cross multiply
    2,616.65x = 3,611.40 × 2,020.01
  4. Step 4: Simplify right side
    2,616.65x = 7,295,046.06
  5. Step 5: Solve for x
    x = 7,295,046.06/2,616.65
  6. Step 6: Final answer
    x = 2,787.94

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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.