Home / 2,219.94-3,063.50-1,225.20

Finding the Fourth Proportional to 2,219.94, 3,063.50 and 1,225.20

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Solution

The fourth proportional to 2,219.94, 3,063.50 and 1,225.20 is: 1,690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.94 : 3,063.50 = 1,225.20 : x
  2. Step 2: Convert to fraction form
    2,219.94/3,063.50 = 1,225.20/x
  3. Step 3: Cross multiply
    2,219.94x = 3,063.50 × 1,225.20
  4. Step 4: Simplify right side
    2,219.94x = 3,753,400.20
  5. Step 5: Solve for x
    x = 3,753,400.20/2,219.94
  6. Step 6: Final answer
    x = 1,690.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.