Home / 4,091.39-6,138.06-1,318.32

Finding the Fourth Proportional to 4,091.39, 6,138.06 and 1,318.32

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Solution

The fourth proportional to 4,091.39, 6,138.06 and 1,318.32 is: 1,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.39 : 6,138.06 = 1,318.32 : x
  2. Step 2: Convert to fraction form
    4,091.39/6,138.06 = 1,318.32/x
  3. Step 3: Cross multiply
    4,091.39x = 6,138.06 × 1,318.32
  4. Step 4: Simplify right side
    4,091.39x = 8,091,927.26
  5. Step 5: Solve for x
    x = 8,091,927.26/4,091.39
  6. Step 6: Final answer
    x = 1,977.80

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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.