Home / 6,445.20-9,660.60-3,673.20

Finding the Fourth Proportional to 6,445.20, 9,660.60 and 3,673.20

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Solution

The fourth proportional to 6,445.20, 9,660.60 and 3,673.20 is: 5,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.20 : 9,660.60 = 3,673.20 : x
  2. Step 2: Convert to fraction form
    6,445.20/9,660.60 = 3,673.20/x
  3. Step 3: Cross multiply
    6,445.20x = 9,660.60 × 3,673.20
  4. Step 4: Simplify right side
    6,445.20x = 35,485,315.92
  5. Step 5: Solve for x
    x = 35,485,315.92/6,445.20
  6. Step 6: Final answer
    x = 5,505.70

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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.