Home / 3,154.70-4,356.24-1,977.80

Finding the Fourth Proportional to 3,154.70, 4,356.24 and 1,977.80

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Solution

The fourth proportional to 3,154.70, 4,356.24 and 1,977.80 is: 2,731.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.70 : 4,356.24 = 1,977.80 : x
  2. Step 2: Convert to fraction form
    3,154.70/4,356.24 = 1,977.80/x
  3. Step 3: Cross multiply
    3,154.70x = 4,356.24 × 1,977.80
  4. Step 4: Simplify right side
    3,154.70x = 8,615,771.47
  5. Step 5: Solve for x
    x = 8,615,771.47/3,154.70
  6. Step 6: Final answer
    x = 2,731.09

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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.