Home / 2,611.38-3,916.75-663.60

Finding the Fourth Proportional to 2,611.38, 3,916.75 and 663.60

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Solution

The fourth proportional to 2,611.38, 3,916.75 and 663.60 is: 995.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.38 : 3,916.75 = 663.60 : x
  2. Step 2: Convert to fraction form
    2,611.38/3,916.75 = 663.60/x
  3. Step 3: Cross multiply
    2,611.38x = 3,916.75 × 663.60
  4. Step 4: Simplify right side
    2,611.38x = 2,599,155.30
  5. Step 5: Solve for x
    x = 2,599,155.30/2,611.38
  6. Step 6: Final answer
    x = 995.32

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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.