Home / 3,130.80-4,694.30-2,155.82

Finding the Fourth Proportional to 3,130.80, 4,694.30 and 2,155.82

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Solution

The fourth proportional to 3,130.80, 4,694.30 and 2,155.82 is: 3,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.80 : 4,694.30 = 2,155.82 : x
  2. Step 2: Convert to fraction form
    3,130.80/4,694.30 = 2,155.82/x
  3. Step 3: Cross multiply
    3,130.80x = 4,694.30 × 2,155.82
  4. Step 4: Simplify right side
    3,130.80x = 10,120,065.83
  5. Step 5: Solve for x
    x = 10,120,065.83/3,130.80
  6. Step 6: Final answer
    x = 3,232.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.