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Finding the Fourth Proportional to 6,439, 8,885.86 and 3,786.52

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Solution

The fourth proportional to 6,439, 8,885.86 and 3,786.52 is: 5,225.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439 : 8,885.86 = 3,786.52 : x
  2. Step 2: Convert to fraction form
    6,439/8,885.86 = 3,786.52/x
  3. Step 3: Cross multiply
    6,439x = 8,885.86 × 3,786.52
  4. Step 4: Simplify right side
    6,439x = 33,646,486.61
  5. Step 5: Solve for x
    x = 33,646,486.61/6,439
  6. Step 6: Final answer
    x = 5,225.42

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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.