Home / 4,102.90-6,156.41-1,911.80

Finding the Fourth Proportional to 4,102.90, 6,156.41 and 1,911.80

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Solution

The fourth proportional to 4,102.90, 6,156.41 and 1,911.80 is: 2,868.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,102.90 : 6,156.41 = 1,911.80 : x
  2. Step 2: Convert to fraction form
    4,102.90/6,156.41 = 1,911.80/x
  3. Step 3: Cross multiply
    4,102.90x = 6,156.41 × 1,911.80
  4. Step 4: Simplify right side
    4,102.90x = 11,769,830.47
  5. Step 5: Solve for x
    x = 11,769,830.47/4,102.90
  6. Step 6: Final answer
    x = 2,868.66

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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.