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Finding the Fourth Proportional to 3,806.40, 5,709.60 and 3,595.20

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Solution

The fourth proportional to 3,806.40, 5,709.60 and 3,595.20 is: 5,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.40 : 5,709.60 = 3,595.20 : x
  2. Step 2: Convert to fraction form
    3,806.40/5,709.60 = 3,595.20/x
  3. Step 3: Cross multiply
    3,806.40x = 5,709.60 × 3,595.20
  4. Step 4: Simplify right side
    3,806.40x = 20,527,153.92
  5. Step 5: Solve for x
    x = 20,527,153.92/3,806.40
  6. Step 6: Final answer
    x = 5,392.80

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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.