Home / 5,421.15-8,132.85-1,722.90

Finding the Fourth Proportional to 5,421.15, 8,132.85 and 1,722.90

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Solution

The fourth proportional to 5,421.15, 8,132.85 and 1,722.90 is: 2,584.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.15 : 8,132.85 = 1,722.90 : x
  2. Step 2: Convert to fraction form
    5,421.15/8,132.85 = 1,722.90/x
  3. Step 3: Cross multiply
    5,421.15x = 8,132.85 × 1,722.90
  4. Step 4: Simplify right side
    5,421.15x = 14,012,087.27
  5. Step 5: Solve for x
    x = 14,012,087.27/5,421.15
  6. Step 6: Final answer
    x = 2,584.71

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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.