Home / 4,102.12-6,156.42-1,909.72

Finding the Fourth Proportional to 4,102.12, 6,156.42 and 1,909.72

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Solution

The fourth proportional to 4,102.12, 6,156.42 and 1,909.72 is: 2,866.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,102.12 : 6,156.42 = 1,909.72 : x
  2. Step 2: Convert to fraction form
    4,102.12/6,156.42 = 1,909.72/x
  3. Step 3: Cross multiply
    4,102.12x = 6,156.42 × 1,909.72
  4. Step 4: Simplify right side
    4,102.12x = 11,757,038.40
  5. Step 5: Solve for x
    x = 11,757,038.40/4,102.12
  6. Step 6: Final answer
    x = 2,866.09

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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.