Home / 3,940.08-5,437.32-2,261.50

Finding the Fourth Proportional to 3,940.08, 5,437.32 and 2,261.50

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Solution

The fourth proportional to 3,940.08, 5,437.32 and 2,261.50 is: 3,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.08 : 5,437.32 = 2,261.50 : x
  2. Step 2: Convert to fraction form
    3,940.08/5,437.32 = 2,261.50/x
  3. Step 3: Cross multiply
    3,940.08x = 5,437.32 × 2,261.50
  4. Step 4: Simplify right side
    3,940.08x = 12,296,499.18
  5. Step 5: Solve for x
    x = 12,296,499.18/3,940.08
  6. Step 6: Final answer
    x = 3,120.88

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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.