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Finding the Fourth Proportional to 4,987.65, 6,882.69 and 2,749.47

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Solution

The fourth proportional to 4,987.65, 6,882.69 and 2,749.47 is: 3,794.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.65 : 6,882.69 = 2,749.47 : x
  2. Step 2: Convert to fraction form
    4,987.65/6,882.69 = 2,749.47/x
  3. Step 3: Cross multiply
    4,987.65x = 6,882.69 × 2,749.47
  4. Step 4: Simplify right side
    4,987.65x = 18,923,749.67
  5. Step 5: Solve for x
    x = 18,923,749.67/4,987.65
  6. Step 6: Final answer
    x = 3,794.12

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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.