Home / 2,215.24-3,057.42-1,283.80

Finding the Fourth Proportional to 2,215.24, 3,057.42 and 1,283.80

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Solution

The fourth proportional to 2,215.24, 3,057.42 and 1,283.80 is: 1,771.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.24 : 3,057.42 = 1,283.80 : x
  2. Step 2: Convert to fraction form
    2,215.24/3,057.42 = 1,283.80/x
  3. Step 3: Cross multiply
    2,215.24x = 3,057.42 × 1,283.80
  4. Step 4: Simplify right side
    2,215.24x = 3,925,115.80
  5. Step 5: Solve for x
    x = 3,925,115.80/2,215.24
  6. Step 6: Final answer
    x = 1,771.87

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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.