Home / 3,729.35-5,143.07-2,887.35

Finding the Fourth Proportional to 3,729.35, 5,143.07 and 2,887.35

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Solution

The fourth proportional to 3,729.35, 5,143.07 and 2,887.35 is: 3,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.35 : 5,143.07 = 2,887.35 : x
  2. Step 2: Convert to fraction form
    3,729.35/5,143.07 = 2,887.35/x
  3. Step 3: Cross multiply
    3,729.35x = 5,143.07 × 2,887.35
  4. Step 4: Simplify right side
    3,729.35x = 14,849,850.38
  5. Step 5: Solve for x
    x = 14,849,850.38/3,729.35
  6. Step 6: Final answer
    x = 3,981.89

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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.