Home / 1,872.24-2,808.36-718.26

Finding the Fourth Proportional to 1,872.24, 2,808.36 and 718.26

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Solution

The fourth proportional to 1,872.24, 2,808.36 and 718.26 is: 1,077.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.24 : 2,808.36 = 718.26 : x
  2. Step 2: Convert to fraction form
    1,872.24/2,808.36 = 718.26/x
  3. Step 3: Cross multiply
    1,872.24x = 2,808.36 × 718.26
  4. Step 4: Simplify right side
    1,872.24x = 2,017,132.65
  5. Step 5: Solve for x
    x = 2,017,132.65/1,872.24
  6. Step 6: Final answer
    x = 1,077.39

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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.