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Finding the Fourth Proportional to 3,618.95, 4,974.01 and 3,196.80

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Solution

The fourth proportional to 3,618.95, 4,974.01 and 3,196.80 is: 4,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.95 : 4,974.01 = 3,196.80 : x
  2. Step 2: Convert to fraction form
    3,618.95/4,974.01 = 3,196.80/x
  3. Step 3: Cross multiply
    3,618.95x = 4,974.01 × 3,196.80
  4. Step 4: Simplify right side
    3,618.95x = 15,900,907.18
  5. Step 5: Solve for x
    x = 15,900,907.18/3,618.95
  6. Step 6: Final answer
    x = 4,393.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.