Home / 5,218.98-7,828.25-1,521.13

Finding the Fourth Proportional to 5,218.98, 7,828.25 and 1,521.13

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Solution

The fourth proportional to 5,218.98, 7,828.25 and 1,521.13 is: 2,281.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.98 : 7,828.25 = 1,521.13 : x
  2. Step 2: Convert to fraction form
    5,218.98/7,828.25 = 1,521.13/x
  3. Step 3: Cross multiply
    5,218.98x = 7,828.25 × 1,521.13
  4. Step 4: Simplify right side
    5,218.98x = 11,907,785.92
  5. Step 5: Solve for x
    x = 11,907,785.92/5,218.98
  6. Step 6: Final answer
    x = 2,281.63

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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.