Home / 3,616.90-5,429.40-1,972.60

Finding the Fourth Proportional to 3,616.90, 5,429.40 and 1,972.60

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Solution

The fourth proportional to 3,616.90, 5,429.40 and 1,972.60 is: 2,961.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.90 : 5,429.40 = 1,972.60 : x
  2. Step 2: Convert to fraction form
    3,616.90/5,429.40 = 1,972.60/x
  3. Step 3: Cross multiply
    3,616.90x = 5,429.40 × 1,972.60
  4. Step 4: Simplify right side
    3,616.90x = 10,710,034.44
  5. Step 5: Solve for x
    x = 10,710,034.44/3,616.90
  6. Step 6: Final answer
    x = 2,961.11

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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.