Home / 2,219.97-3,063.56-1,225.32

Finding the Fourth Proportional to 2,219.97, 3,063.56 and 1,225.32

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Solution

The fourth proportional to 2,219.97, 3,063.56 and 1,225.32 is: 1,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.97 : 3,063.56 = 1,225.32 : x
  2. Step 2: Convert to fraction form
    2,219.97/3,063.56 = 1,225.32/x
  3. Step 3: Cross multiply
    2,219.97x = 3,063.56 × 1,225.32
  4. Step 4: Simplify right side
    2,219.97x = 3,753,841.34
  5. Step 5: Solve for x
    x = 3,753,841.34/2,219.97
  6. Step 6: Final answer
    x = 1,690.94

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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.