Home / 4,078.51-6,120.86-2,985.68

Finding the Fourth Proportional to 4,078.51, 6,120.86 and 2,985.68

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Solution

The fourth proportional to 4,078.51, 6,120.86 and 2,985.68 is: 4,480.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.51 : 6,120.86 = 2,985.68 : x
  2. Step 2: Convert to fraction form
    4,078.51/6,120.86 = 2,985.68/x
  3. Step 3: Cross multiply
    4,078.51x = 6,120.86 × 2,985.68
  4. Step 4: Simplify right side
    4,078.51x = 18,274,929.66
  5. Step 5: Solve for x
    x = 18,274,929.66/4,078.51
  6. Step 6: Final answer
    x = 4,480.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.