Home / 2,215.31-3,060.23-2,015.78

Finding the Fourth Proportional to 2,215.31, 3,060.23 and 2,015.78

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Solution

The fourth proportional to 2,215.31, 3,060.23 and 2,015.78 is: 2,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.31 : 3,060.23 = 2,015.78 : x
  2. Step 2: Convert to fraction form
    2,215.31/3,060.23 = 2,015.78/x
  3. Step 3: Cross multiply
    2,215.31x = 3,060.23 × 2,015.78
  4. Step 4: Simplify right side
    2,215.31x = 6,168,725.05
  5. Step 5: Solve for x
    x = 6,168,725.05/2,215.31
  6. Step 6: Final answer
    x = 2,784.59

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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.