Home / 2,487.36-3,429.91-1,647.80

Finding the Fourth Proportional to 2,487.36, 3,429.91 and 1,647.80

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Solution

The fourth proportional to 2,487.36, 3,429.91 and 1,647.80 is: 2,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.36 : 3,429.91 = 1,647.80 : x
  2. Step 2: Convert to fraction form
    2,487.36/3,429.91 = 1,647.80/x
  3. Step 3: Cross multiply
    2,487.36x = 3,429.91 × 1,647.80
  4. Step 4: Simplify right side
    2,487.36x = 5,651,805.70
  5. Step 5: Solve for x
    x = 5,651,805.70/2,487.36
  6. Step 6: Final answer
    x = 2,272.21

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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.