Home / 3,517.92-5,276.40-1,209.12

Finding the Fourth Proportional to 3,517.92, 5,276.40 and 1,209.12

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Solution

The fourth proportional to 3,517.92, 5,276.40 and 1,209.12 is: 1,813.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,517.92 : 5,276.40 = 1,209.12 : x
  2. Step 2: Convert to fraction form
    3,517.92/5,276.40 = 1,209.12/x
  3. Step 3: Cross multiply
    3,517.92x = 5,276.40 × 1,209.12
  4. Step 4: Simplify right side
    3,517.92x = 6,379,800.77
  5. Step 5: Solve for x
    x = 6,379,800.77/3,517.92
  6. Step 6: Final answer
    x = 1,813.52

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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.