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Finding the Fourth Proportional to 6,347.38, 8,758.34 and 3,987.84

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Solution

The fourth proportional to 6,347.38, 8,758.34 and 3,987.84 is: 5,502.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,347.38 : 8,758.34 = 3,987.84 : x
  2. Step 2: Convert to fraction form
    6,347.38/8,758.34 = 3,987.84/x
  3. Step 3: Cross multiply
    6,347.38x = 8,758.34 × 3,987.84
  4. Step 4: Simplify right side
    6,347.38x = 34,926,858.59
  5. Step 5: Solve for x
    x = 34,926,858.59/6,347.38
  6. Step 6: Final answer
    x = 5,502.56

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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.