Home / 4,207.79-6,311.45-1,285.86

Finding the Fourth Proportional to 4,207.79, 6,311.45 and 1,285.86

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Solution

The fourth proportional to 4,207.79, 6,311.45 and 1,285.86 is: 1,928.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,207.79 : 6,311.45 = 1,285.86 : x
  2. Step 2: Convert to fraction form
    4,207.79/6,311.45 = 1,285.86/x
  3. Step 3: Cross multiply
    4,207.79x = 6,311.45 × 1,285.86
  4. Step 4: Simplify right side
    4,207.79x = 8,115,634.67
  5. Step 5: Solve for x
    x = 8,115,634.67/4,207.79
  6. Step 6: Final answer
    x = 1,928.72

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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.