Home / 3,830.87-5,287.12-2,152.44

Finding the Fourth Proportional to 3,830.87, 5,287.12 and 2,152.44

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Solution

The fourth proportional to 3,830.87, 5,287.12 and 2,152.44 is: 2,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.87 : 5,287.12 = 2,152.44 : x
  2. Step 2: Convert to fraction form
    3,830.87/5,287.12 = 2,152.44/x
  3. Step 3: Cross multiply
    3,830.87x = 5,287.12 × 2,152.44
  4. Step 4: Simplify right side
    3,830.87x = 11,380,203.19
  5. Step 5: Solve for x
    x = 11,380,203.19/3,830.87
  6. Step 6: Final answer
    x = 2,970.66

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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.