Home / 2,219.84-3,063.36-1,225.13

Finding the Fourth Proportional to 2,219.84, 3,063.36 and 1,225.13

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Solution

The fourth proportional to 2,219.84, 3,063.36 and 1,225.13 is: 1,690.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.84 : 3,063.36 = 1,225.13 : x
  2. Step 2: Convert to fraction form
    2,219.84/3,063.36 = 1,225.13/x
  3. Step 3: Cross multiply
    2,219.84x = 3,063.36 × 1,225.13
  4. Step 4: Simplify right side
    2,219.84x = 3,752,998.92
  5. Step 5: Solve for x
    x = 3,752,998.92/2,219.84
  6. Step 6: Final answer
    x = 1,690.66

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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.