Home / 4,821.35-6,648.19-3,139.66

Finding the Fourth Proportional to 4,821.35, 6,648.19 and 3,139.66

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Solution

The fourth proportional to 4,821.35, 6,648.19 and 3,139.66 is: 4,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,821.35 : 6,648.19 = 3,139.66 : x
  2. Step 2: Convert to fraction form
    4,821.35/6,648.19 = 3,139.66/x
  3. Step 3: Cross multiply
    4,821.35x = 6,648.19 × 3,139.66
  4. Step 4: Simplify right side
    4,821.35x = 20,873,056.22
  5. Step 5: Solve for x
    x = 20,873,056.22/4,821.35
  6. Step 6: Final answer
    x = 4,329.30

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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.