Home / 2,569.11-3,853.79-720.36

Finding the Fourth Proportional to 2,569.11, 3,853.79 and 720.36

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Solution

The fourth proportional to 2,569.11, 3,853.79 and 720.36 is: 1,080.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.11 : 3,853.79 = 720.36 : x
  2. Step 2: Convert to fraction form
    2,569.11/3,853.79 = 720.36/x
  3. Step 3: Cross multiply
    2,569.11x = 3,853.79 × 720.36
  4. Step 4: Simplify right side
    2,569.11x = 2,776,093.29
  5. Step 5: Solve for x
    x = 2,776,093.29/2,569.11
  6. Step 6: Final answer
    x = 1,080.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.