Home / 4,639.21-6,398.38-4,078.48

Finding the Fourth Proportional to 4,639.21, 6,398.38 and 4,078.48

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Solution

The fourth proportional to 4,639.21, 6,398.38 and 4,078.48 is: 5,625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.21 : 6,398.38 = 4,078.48 : x
  2. Step 2: Convert to fraction form
    4,639.21/6,398.38 = 4,078.48/x
  3. Step 3: Cross multiply
    4,639.21x = 6,398.38 × 4,078.48
  4. Step 4: Simplify right side
    4,639.21x = 26,095,691.05
  5. Step 5: Solve for x
    x = 26,095,691.05/4,639.21
  6. Step 6: Final answer
    x = 5,625.04

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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.