Home / 3,390.14-5,055.38-3,120.86

Finding the Fourth Proportional to 3,390.14, 5,055.38 and 3,120.86

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Solution

The fourth proportional to 3,390.14, 5,055.38 and 3,120.86 is: 4,653.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.14 : 5,055.38 = 3,120.86 : x
  2. Step 2: Convert to fraction form
    3,390.14/5,055.38 = 3,120.86/x
  3. Step 3: Cross multiply
    3,390.14x = 5,055.38 × 3,120.86
  4. Step 4: Simplify right side
    3,390.14x = 15,777,133.23
  5. Step 5: Solve for x
    x = 15,777,133.23/3,390.14
  6. Step 6: Final answer
    x = 4,653.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.