Home / 3,156.11-4,355.46-1,977.87

Finding the Fourth Proportional to 3,156.11, 4,355.46 and 1,977.87

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Solution

The fourth proportional to 3,156.11, 4,355.46 and 1,977.87 is: 2,729.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.11 : 4,355.46 = 1,977.87 : x
  2. Step 2: Convert to fraction form
    3,156.11/4,355.46 = 1,977.87/x
  3. Step 3: Cross multiply
    3,156.11x = 4,355.46 × 1,977.87
  4. Step 4: Simplify right side
    3,156.11x = 8,614,533.67
  5. Step 5: Solve for x
    x = 8,614,533.67/3,156.11
  6. Step 6: Final answer
    x = 2,729.48

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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.