Home / 3,458.86-5,187.15-1,378.24

Finding the Fourth Proportional to 3,458.86, 5,187.15 and 1,378.24

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Solution

The fourth proportional to 3,458.86, 5,187.15 and 1,378.24 is: 2,066.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,458.86 : 5,187.15 = 1,378.24 : x
  2. Step 2: Convert to fraction form
    3,458.86/5,187.15 = 1,378.24/x
  3. Step 3: Cross multiply
    3,458.86x = 5,187.15 × 1,378.24
  4. Step 4: Simplify right side
    3,458.86x = 7,149,137.62
  5. Step 5: Solve for x
    x = 7,149,137.62/3,458.86
  6. Step 6: Final answer
    x = 2,066.91

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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.