Home / 3,917.80-5,876.70-2,385.64

Finding the Fourth Proportional to 3,917.80, 5,876.70 and 2,385.64

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Solution

The fourth proportional to 3,917.80, 5,876.70 and 2,385.64 is: 3,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.80 : 5,876.70 = 2,385.64 : x
  2. Step 2: Convert to fraction form
    3,917.80/5,876.70 = 2,385.64/x
  3. Step 3: Cross multiply
    3,917.80x = 5,876.70 × 2,385.64
  4. Step 4: Simplify right side
    3,917.80x = 14,019,690.59
  5. Step 5: Solve for x
    x = 14,019,690.59/3,917.80
  6. Step 6: Final answer
    x = 3,578.46

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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.