Home / 3,158.66-4,356.48-2,039.78

Finding the Fourth Proportional to 3,158.66, 4,356.48 and 2,039.78

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Solution

The fourth proportional to 3,158.66, 4,356.48 and 2,039.78 is: 2,813.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.66 : 4,356.48 = 2,039.78 : x
  2. Step 2: Convert to fraction form
    3,158.66/4,356.48 = 2,039.78/x
  3. Step 3: Cross multiply
    3,158.66x = 4,356.48 × 2,039.78
  4. Step 4: Simplify right side
    3,158.66x = 8,886,260.77
  5. Step 5: Solve for x
    x = 8,886,260.77/3,158.66
  6. Step 6: Final answer
    x = 2,813.30

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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.