Home / 2,261.37-3,121.76-1,515.81

Finding the Fourth Proportional to 2,261.37, 3,121.76 and 1,515.81

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Solution

The fourth proportional to 2,261.37, 3,121.76 and 1,515.81 is: 2,092.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.37 : 3,121.76 = 1,515.81 : x
  2. Step 2: Convert to fraction form
    2,261.37/3,121.76 = 1,515.81/x
  3. Step 3: Cross multiply
    2,261.37x = 3,121.76 × 1,515.81
  4. Step 4: Simplify right side
    2,261.37x = 4,732,002.00
  5. Step 5: Solve for x
    x = 4,732,002.00/2,261.37
  6. Step 6: Final answer
    x = 2,092.54

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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.