Home / 3,981.88-5,495.16-2,803.32

Finding the Fourth Proportional to 3,981.88, 5,495.16 and 2,803.32

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Solution

The fourth proportional to 3,981.88, 5,495.16 and 2,803.32 is: 3,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.88 : 5,495.16 = 2,803.32 : x
  2. Step 2: Convert to fraction form
    3,981.88/5,495.16 = 2,803.32/x
  3. Step 3: Cross multiply
    3,981.88x = 5,495.16 × 2,803.32
  4. Step 4: Simplify right side
    3,981.88x = 15,404,691.93
  5. Step 5: Solve for x
    x = 15,404,691.93/3,981.88
  6. Step 6: Final answer
    x = 3,868.70

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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.