Home / 2,187.83-3,278.70-1,353.13

Finding the Fourth Proportional to 2,187.83, 3,278.70 and 1,353.13

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Solution

The fourth proportional to 2,187.83, 3,278.70 and 1,353.13 is: 2,027.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.83 : 3,278.70 = 1,353.13 : x
  2. Step 2: Convert to fraction form
    2,187.83/3,278.70 = 1,353.13/x
  3. Step 3: Cross multiply
    2,187.83x = 3,278.70 × 1,353.13
  4. Step 4: Simplify right side
    2,187.83x = 4,436,499.13
  5. Step 5: Solve for x
    x = 4,436,499.13/2,187.83
  6. Step 6: Final answer
    x = 2,027.81

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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.