Home / 5,685.21-8,529.15-1,789.62

Finding the Fourth Proportional to 5,685.21, 8,529.15 and 1,789.62

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Solution

The fourth proportional to 5,685.21, 8,529.15 and 1,789.62 is: 2,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.21 : 8,529.15 = 1,789.62 : x
  2. Step 2: Convert to fraction form
    5,685.21/8,529.15 = 1,789.62/x
  3. Step 3: Cross multiply
    5,685.21x = 8,529.15 × 1,789.62
  4. Step 4: Simplify right side
    5,685.21x = 15,263,937.42
  5. Step 5: Solve for x
    x = 15,263,937.42/5,685.21
  6. Step 6: Final answer
    x = 2,684.85

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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.