Home / 3,475.86-5,215.83-1,286.12

Finding the Fourth Proportional to 3,475.86, 5,215.83 and 1,286.12

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Solution

The fourth proportional to 3,475.86, 5,215.83 and 1,286.12 is: 1,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,475.86 : 5,215.83 = 1,286.12 : x
  2. Step 2: Convert to fraction form
    3,475.86/5,215.83 = 1,286.12/x
  3. Step 3: Cross multiply
    3,475.86x = 5,215.83 × 1,286.12
  4. Step 4: Simplify right side
    3,475.86x = 6,708,157.20
  5. Step 5: Solve for x
    x = 6,708,157.20/3,475.86
  6. Step 6: Final answer
    x = 1,929.93

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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.