Home / 4,207.15-6,311.65-1,285.68

Finding the Fourth Proportional to 4,207.15, 6,311.65 and 1,285.68

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Solution

The fourth proportional to 4,207.15, 6,311.65 and 1,285.68 is: 1,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,207.15 : 6,311.65 = 1,285.68 : x
  2. Step 2: Convert to fraction form
    4,207.15/6,311.65 = 1,285.68/x
  3. Step 3: Cross multiply
    4,207.15x = 6,311.65 × 1,285.68
  4. Step 4: Simplify right side
    4,207.15x = 8,114,758.96
  5. Step 5: Solve for x
    x = 8,114,758.96/4,207.15
  6. Step 6: Final answer
    x = 1,928.80

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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.