Home / 3,530.80-4,858.20-2,899

Finding the Fourth Proportional to 3,530.80, 4,858.20 and 2,899

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Solution

The fourth proportional to 3,530.80, 4,858.20 and 2,899 is: 3,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.80 : 4,858.20 = 2,899 : x
  2. Step 2: Convert to fraction form
    3,530.80/4,858.20 = 2,899/x
  3. Step 3: Cross multiply
    3,530.80x = 4,858.20 × 2,899
  4. Step 4: Simplify right side
    3,530.80x = 14,083,921.80
  5. Step 5: Solve for x
    x = 14,083,921.80/3,530.80
  6. Step 6: Final answer
    x = 3,988.88

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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.