Home / 4,986.61-6,878.91-3,805.63

Finding the Fourth Proportional to 4,986.61, 6,878.91 and 3,805.63

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Solution

The fourth proportional to 4,986.61, 6,878.91 and 3,805.63 is: 5,249.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.61 : 6,878.91 = 3,805.63 : x
  2. Step 2: Convert to fraction form
    4,986.61/6,878.91 = 3,805.63/x
  3. Step 3: Cross multiply
    4,986.61x = 6,878.91 × 3,805.63
  4. Step 4: Simplify right side
    4,986.61x = 26,178,586.26
  5. Step 5: Solve for x
    x = 26,178,586.26/4,986.61
  6. Step 6: Final answer
    x = 5,249.78

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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.