Home / 3,375.78-4,657.14-2,115.98

Finding the Fourth Proportional to 3,375.78, 4,657.14 and 2,115.98

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Solution

The fourth proportional to 3,375.78, 4,657.14 and 2,115.98 is: 2,919.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.78 : 4,657.14 = 2,115.98 : x
  2. Step 2: Convert to fraction form
    3,375.78/4,657.14 = 2,115.98/x
  3. Step 3: Cross multiply
    3,375.78x = 4,657.14 × 2,115.98
  4. Step 4: Simplify right side
    3,375.78x = 9,854,391.81
  5. Step 5: Solve for x
    x = 9,854,391.81/3,375.78
  6. Step 6: Final answer
    x = 2,919.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.