Home / 2,982.12-4,115.22-1,655.80

Finding the Fourth Proportional to 2,982.12, 4,115.22 and 1,655.80

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Solution

The fourth proportional to 2,982.12, 4,115.22 and 1,655.80 is: 2,284.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.12 : 4,115.22 = 1,655.80 : x
  2. Step 2: Convert to fraction form
    2,982.12/4,115.22 = 1,655.80/x
  3. Step 3: Cross multiply
    2,982.12x = 4,115.22 × 1,655.80
  4. Step 4: Simplify right side
    2,982.12x = 6,813,970.99
  5. Step 5: Solve for x
    x = 6,813,970.99/2,982.12
  6. Step 6: Final answer
    x = 2,284.94

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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.