Home / 2,261.09-3,119.84-1,515.99

Finding the Fourth Proportional to 2,261.09, 3,119.84 and 1,515.99

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Solution

The fourth proportional to 2,261.09, 3,119.84 and 1,515.99 is: 2,091.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.09 : 3,119.84 = 1,515.99 : x
  2. Step 2: Convert to fraction form
    2,261.09/3,119.84 = 1,515.99/x
  3. Step 3: Cross multiply
    2,261.09x = 3,119.84 × 1,515.99
  4. Step 4: Simplify right side
    2,261.09x = 4,729,646.24
  5. Step 5: Solve for x
    x = 4,729,646.24/2,261.09
  6. Step 6: Final answer
    x = 2,091.75

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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.