Home / 3,438.80-5,159.06-1,878.36

Finding the Fourth Proportional to 3,438.80, 5,159.06 and 1,878.36

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Solution

The fourth proportional to 3,438.80, 5,159.06 and 1,878.36 is: 2,818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.80 : 5,159.06 = 1,878.36 : x
  2. Step 2: Convert to fraction form
    3,438.80/5,159.06 = 1,878.36/x
  3. Step 3: Cross multiply
    3,438.80x = 5,159.06 × 1,878.36
  4. Step 4: Simplify right side
    3,438.80x = 9,690,571.94
  5. Step 5: Solve for x
    x = 9,690,571.94/3,438.80
  6. Step 6: Final answer
    x = 2,818.01

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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.