Home / 2,215.14-3,056.93-1,220.59

Finding the Fourth Proportional to 2,215.14, 3,056.93 and 1,220.59

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Solution

The fourth proportional to 2,215.14, 3,056.93 and 1,220.59 is: 1,684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.14 : 3,056.93 = 1,220.59 : x
  2. Step 2: Convert to fraction form
    2,215.14/3,056.93 = 1,220.59/x
  3. Step 3: Cross multiply
    2,215.14x = 3,056.93 × 1,220.59
  4. Step 4: Simplify right side
    2,215.14x = 3,731,258.19
  5. Step 5: Solve for x
    x = 3,731,258.19/2,215.14
  6. Step 6: Final answer
    x = 1,684.43

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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.