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Finding the Fourth Proportional to 2,611.08, 3,916.80 and 968.04

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Solution

The fourth proportional to 2,611.08, 3,916.80 and 968.04 is: 1,452.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.08 : 3,916.80 = 968.04 : x
  2. Step 2: Convert to fraction form
    2,611.08/3,916.80 = 968.04/x
  3. Step 3: Cross multiply
    2,611.08x = 3,916.80 × 968.04
  4. Step 4: Simplify right side
    2,611.08x = 3,791,619.07
  5. Step 5: Solve for x
    x = 3,791,619.07/2,611.08
  6. Step 6: Final answer
    x = 1,452.13

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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.