Home / 2,261.30-3,122.37-1,505.79

Finding the Fourth Proportional to 2,261.30, 3,122.37 and 1,505.79

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Solution

The fourth proportional to 2,261.30, 3,122.37 and 1,505.79 is: 2,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.30 : 3,122.37 = 1,505.79 : x
  2. Step 2: Convert to fraction form
    2,261.30/3,122.37 = 1,505.79/x
  3. Step 3: Cross multiply
    2,261.30x = 3,122.37 × 1,505.79
  4. Step 4: Simplify right side
    2,261.30x = 4,701,633.52
  5. Step 5: Solve for x
    x = 4,701,633.52/2,261.30
  6. Step 6: Final answer
    x = 2,079.18

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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.