Home / 4,188.90-6,278.76-2,105.58

Finding the Fourth Proportional to 4,188.90, 6,278.76 and 2,105.58

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Solution

The fourth proportional to 4,188.90, 6,278.76 and 2,105.58 is: 3,156.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.90 : 6,278.76 = 2,105.58 : x
  2. Step 2: Convert to fraction form
    4,188.90/6,278.76 = 2,105.58/x
  3. Step 3: Cross multiply
    4,188.90x = 6,278.76 × 2,105.58
  4. Step 4: Simplify right side
    4,188.90x = 13,220,431.48
  5. Step 5: Solve for x
    x = 13,220,431.48/4,188.90
  6. Step 6: Final answer
    x = 3,156.06

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1.5x scale

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.