Home / 2,219.93-3,063.54-1,225.21

Finding the Fourth Proportional to 2,219.93, 3,063.54 and 1,225.21

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Solution

The fourth proportional to 2,219.93, 3,063.54 and 1,225.21 is: 1,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.93 : 3,063.54 = 1,225.21 : x
  2. Step 2: Convert to fraction form
    2,219.93/3,063.54 = 1,225.21/x
  3. Step 3: Cross multiply
    2,219.93x = 3,063.54 × 1,225.21
  4. Step 4: Simplify right side
    2,219.93x = 3,753,487.26
  5. Step 5: Solve for x
    x = 3,753,487.26/2,219.93
  6. Step 6: Final answer
    x = 1,690.81

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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.