Home / 2,219.79-3,063.49-1,225.27

Finding the Fourth Proportional to 2,219.79, 3,063.49 and 1,225.27

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Solution

The fourth proportional to 2,219.79, 3,063.49 and 1,225.27 is: 1,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.79 : 3,063.49 = 1,225.27 : x
  2. Step 2: Convert to fraction form
    2,219.79/3,063.49 = 1,225.27/x
  3. Step 3: Cross multiply
    2,219.79x = 3,063.49 × 1,225.27
  4. Step 4: Simplify right side
    2,219.79x = 3,753,602.39
  5. Step 5: Solve for x
    x = 3,753,602.39/2,219.79
  6. Step 6: Final answer
    x = 1,690.97

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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.