Home / 2,213.87-3,055.08-1,219.12

Finding the Fourth Proportional to 2,213.87, 3,055.08 and 1,219.12

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Solution

The fourth proportional to 2,213.87, 3,055.08 and 1,219.12 is: 1,682.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.87 : 3,055.08 = 1,219.12 : x
  2. Step 2: Convert to fraction form
    2,213.87/3,055.08 = 1,219.12/x
  3. Step 3: Cross multiply
    2,213.87x = 3,055.08 × 1,219.12
  4. Step 4: Simplify right side
    2,213.87x = 3,724,506.06
  5. Step 5: Solve for x
    x = 3,724,506.06/2,213.87
  6. Step 6: Final answer
    x = 1,682.35

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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.