Home / 5,186.40-7,778.44-1,488.61

Finding the Fourth Proportional to 5,186.40, 7,778.44 and 1,488.61

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Solution

The fourth proportional to 5,186.40, 7,778.44 and 1,488.61 is: 2,232.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.40 : 7,778.44 = 1,488.61 : x
  2. Step 2: Convert to fraction form
    5,186.40/7,778.44 = 1,488.61/x
  3. Step 3: Cross multiply
    5,186.40x = 7,778.44 × 1,488.61
  4. Step 4: Simplify right side
    5,186.40x = 11,579,063.57
  5. Step 5: Solve for x
    x = 11,579,063.57/5,186.40
  6. Step 6: Final answer
    x = 2,232.58

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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.