Home / 2,800.68-3,861.99-2,403.78

Finding the Fourth Proportional to 2,800.68, 3,861.99 and 2,403.78

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Solution

The fourth proportional to 2,800.68, 3,861.99 and 2,403.78 is: 3,314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.68 : 3,861.99 = 2,403.78 : x
  2. Step 2: Convert to fraction form
    2,800.68/3,861.99 = 2,403.78/x
  3. Step 3: Cross multiply
    2,800.68x = 3,861.99 × 2,403.78
  4. Step 4: Simplify right side
    2,800.68x = 9,283,374.32
  5. Step 5: Solve for x
    x = 9,283,374.32/2,800.68
  6. Step 6: Final answer
    x = 3,314.69

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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.