Home / 3,718.80-5,575.32-2,156.40

Finding the Fourth Proportional to 3,718.80, 5,575.32 and 2,156.40

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Solution

The fourth proportional to 3,718.80, 5,575.32 and 2,156.40 is: 3,232.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.80 : 5,575.32 = 2,156.40 : x
  2. Step 2: Convert to fraction form
    3,718.80/5,575.32 = 2,156.40/x
  3. Step 3: Cross multiply
    3,718.80x = 5,575.32 × 2,156.40
  4. Step 4: Simplify right side
    3,718.80x = 12,022,620.05
  5. Step 5: Solve for x
    x = 12,022,620.05/3,718.80
  6. Step 6: Final answer
    x = 3,232.93

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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.