Home / 2,123.60-3,183.45-807.09

Finding the Fourth Proportional to 2,123.60, 3,183.45 and 807.09

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Solution

The fourth proportional to 2,123.60, 3,183.45 and 807.09 is: 1,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.60 : 3,183.45 = 807.09 : x
  2. Step 2: Convert to fraction form
    2,123.60/3,183.45 = 807.09/x
  3. Step 3: Cross multiply
    2,123.60x = 3,183.45 × 807.09
  4. Step 4: Simplify right side
    2,123.60x = 2,569,330.66
  5. Step 5: Solve for x
    x = 2,569,330.66/2,123.60
  6. Step 6: Final answer
    x = 1,209.90

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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.