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Finding the Fourth Proportional to 2,616.19, 3,923.82 and 972.60

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Solution

The fourth proportional to 2,616.19, 3,923.82 and 972.60 is: 1,458.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.19 : 3,923.82 = 972.60 : x
  2. Step 2: Convert to fraction form
    2,616.19/3,923.82 = 972.60/x
  3. Step 3: Cross multiply
    2,616.19x = 3,923.82 × 972.60
  4. Step 4: Simplify right side
    2,616.19x = 3,816,307.33
  5. Step 5: Solve for x
    x = 3,816,307.33/2,616.19
  6. Step 6: Final answer
    x = 1,458.73

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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.