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Finding the Fourth Proportional to 4,981.11, 6,873.71 and 2,855.12

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Solution

The fourth proportional to 4,981.11, 6,873.71 and 2,855.12 is: 3,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.11 : 6,873.71 = 2,855.12 : x
  2. Step 2: Convert to fraction form
    4,981.11/6,873.71 = 2,855.12/x
  3. Step 3: Cross multiply
    4,981.11x = 6,873.71 × 2,855.12
  4. Step 4: Simplify right side
    4,981.11x = 19,625,223.60
  5. Step 5: Solve for x
    x = 19,625,223.60/4,981.11
  6. Step 6: Final answer
    x = 3,939.93

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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.