Home / 3,511.40-5,267.10-1,972.20

Finding the Fourth Proportional to 3,511.40, 5,267.10 and 1,972.20

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Solution

The fourth proportional to 3,511.40, 5,267.10 and 1,972.20 is: 2,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.40 : 5,267.10 = 1,972.20 : x
  2. Step 2: Convert to fraction form
    3,511.40/5,267.10 = 1,972.20/x
  3. Step 3: Cross multiply
    3,511.40x = 5,267.10 × 1,972.20
  4. Step 4: Simplify right side
    3,511.40x = 10,387,774.62
  5. Step 5: Solve for x
    x = 10,387,774.62/3,511.40
  6. Step 6: Final answer
    x = 2,958.30

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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.