Home / 3,160.80-4,742.28-2,800.08

Finding the Fourth Proportional to 3,160.80, 4,742.28 and 2,800.08

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Solution

The fourth proportional to 3,160.80, 4,742.28 and 2,800.08 is: 4,201.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.80 : 4,742.28 = 2,800.08 : x
  2. Step 2: Convert to fraction form
    3,160.80/4,742.28 = 2,800.08/x
  3. Step 3: Cross multiply
    3,160.80x = 4,742.28 × 2,800.08
  4. Step 4: Simplify right side
    3,160.80x = 13,278,763.38
  5. Step 5: Solve for x
    x = 13,278,763.38/3,160.80
  6. Step 6: Final answer
    x = 4,201.08

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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.