Home / 3,191.36-4,785.20-1,458.32

Finding the Fourth Proportional to 3,191.36, 4,785.20 and 1,458.32

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Solution

The fourth proportional to 3,191.36, 4,785.20 and 1,458.32 is: 2,186.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.36 : 4,785.20 = 1,458.32 : x
  2. Step 2: Convert to fraction form
    3,191.36/4,785.20 = 1,458.32/x
  3. Step 3: Cross multiply
    3,191.36x = 4,785.20 × 1,458.32
  4. Step 4: Simplify right side
    3,191.36x = 6,978,352.86
  5. Step 5: Solve for x
    x = 6,978,352.86/3,191.36
  6. Step 6: Final answer
    x = 2,186.64

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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.