Home / 2,039.20-2,814.01-1,155.05

Finding the Fourth Proportional to 2,039.20, 2,814.01 and 1,155.05

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Solution

The fourth proportional to 2,039.20, 2,814.01 and 1,155.05 is: 1,593.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039.20 : 2,814.01 = 1,155.05 : x
  2. Step 2: Convert to fraction form
    2,039.20/2,814.01 = 1,155.05/x
  3. Step 3: Cross multiply
    2,039.20x = 2,814.01 × 1,155.05
  4. Step 4: Simplify right side
    2,039.20x = 3,250,315.85
  5. Step 5: Solve for x
    x = 3,250,315.85/2,039.20
  6. Step 6: Final answer
    x = 1,593.92

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1.5x scale

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.