Home / 4,447.20-6,685.20-3,157.60

Finding the Fourth Proportional to 4,447.20, 6,685.20 and 3,157.60

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Solution

The fourth proportional to 4,447.20, 6,685.20 and 3,157.60 is: 4,746.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,447.20 : 6,685.20 = 3,157.60 : x
  2. Step 2: Convert to fraction form
    4,447.20/6,685.20 = 3,157.60/x
  3. Step 3: Cross multiply
    4,447.20x = 6,685.20 × 3,157.60
  4. Step 4: Simplify right side
    4,447.20x = 21,109,187.52
  5. Step 5: Solve for x
    x = 21,109,187.52/4,447.20
  6. Step 6: Final answer
    x = 4,746.62

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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.