Home / 2,199.80-3,306.90-2,070.20

Finding the Fourth Proportional to 2,199.80, 3,306.90 and 2,070.20

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Solution

The fourth proportional to 2,199.80, 3,306.90 and 2,070.20 is: 3,112.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.80 : 3,306.90 = 2,070.20 : x
  2. Step 2: Convert to fraction form
    2,199.80/3,306.90 = 2,070.20/x
  3. Step 3: Cross multiply
    2,199.80x = 3,306.90 × 2,070.20
  4. Step 4: Simplify right side
    2,199.80x = 6,845,944.38
  5. Step 5: Solve for x
    x = 6,845,944.38/2,199.80
  6. Step 6: Final answer
    x = 3,112.08

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1.5x scale

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.