Home / 4,112.47-6,168.86-1,920.61

Finding the Fourth Proportional to 4,112.47, 6,168.86 and 1,920.61

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Solution

The fourth proportional to 4,112.47, 6,168.86 and 1,920.61 is: 2,880.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.47 : 6,168.86 = 1,920.61 : x
  2. Step 2: Convert to fraction form
    4,112.47/6,168.86 = 1,920.61/x
  3. Step 3: Cross multiply
    4,112.47x = 6,168.86 × 1,920.61
  4. Step 4: Simplify right side
    4,112.47x = 11,847,979.51
  5. Step 5: Solve for x
    x = 11,847,979.51/4,112.47
  6. Step 6: Final answer
    x = 2,880.99

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1.5x scale

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.