Home / 3,160.38-4,740.56-1,080.40

Finding the Fourth Proportional to 3,160.38, 4,740.56 and 1,080.40

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Solution

The fourth proportional to 3,160.38, 4,740.56 and 1,080.40 is: 1,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.38 : 4,740.56 = 1,080.40 : x
  2. Step 2: Convert to fraction form
    3,160.38/4,740.56 = 1,080.40/x
  3. Step 3: Cross multiply
    3,160.38x = 4,740.56 × 1,080.40
  4. Step 4: Simplify right side
    3,160.38x = 5,121,683.38
  5. Step 5: Solve for x
    x = 5,121,683.38/3,160.38
  6. Step 6: Final answer
    x = 1,620.59

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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.