Home / 3,160.47-4,740.81-1,080.39

Finding the Fourth Proportional to 3,160.47, 4,740.81 and 1,080.39

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Solution

The fourth proportional to 3,160.47, 4,740.81 and 1,080.39 is: 1,620.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.47 : 4,740.81 = 1,080.39 : x
  2. Step 2: Convert to fraction form
    3,160.47/4,740.81 = 1,080.39/x
  3. Step 3: Cross multiply
    3,160.47x = 4,740.81 × 1,080.39
  4. Step 4: Simplify right side
    3,160.47x = 5,121,919.66
  5. Step 5: Solve for x
    x = 5,121,919.66/3,160.47
  6. Step 6: Final answer
    x = 1,620.62

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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.