Home / 5,381.21-8,066.95-1,917.65

Finding the Fourth Proportional to 5,381.21, 8,066.95 and 1,917.65

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Solution

The fourth proportional to 5,381.21, 8,066.95 and 1,917.65 is: 2,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.21 : 8,066.95 = 1,917.65 : x
  2. Step 2: Convert to fraction form
    5,381.21/8,066.95 = 1,917.65/x
  3. Step 3: Cross multiply
    5,381.21x = 8,066.95 × 1,917.65
  4. Step 4: Simplify right side
    5,381.21x = 15,469,586.67
  5. Step 5: Solve for x
    x = 15,469,586.67/5,381.21
  6. Step 6: Final answer
    x = 2,874.74

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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.