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Finding the Fourth Proportional to 4,987.99, 6,882.94 and 2,749.30

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Solution

The fourth proportional to 4,987.99, 6,882.94 and 2,749.30 is: 3,793.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.99 : 6,882.94 = 2,749.30 : x
  2. Step 2: Convert to fraction form
    4,987.99/6,882.94 = 2,749.30/x
  3. Step 3: Cross multiply
    4,987.99x = 6,882.94 × 2,749.30
  4. Step 4: Simplify right side
    4,987.99x = 18,923,253.17
  5. Step 5: Solve for x
    x = 18,923,253.17/4,987.99
  6. Step 6: Final answer
    x = 3,793.77

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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.