Home / 3,657.20-5,485.80-1,709.60

Finding the Fourth Proportional to 3,657.20, 5,485.80 and 1,709.60

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Solution

The fourth proportional to 3,657.20, 5,485.80 and 1,709.60 is: 2,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.20 : 5,485.80 = 1,709.60 : x
  2. Step 2: Convert to fraction form
    3,657.20/5,485.80 = 1,709.60/x
  3. Step 3: Cross multiply
    3,657.20x = 5,485.80 × 1,709.60
  4. Step 4: Simplify right side
    3,657.20x = 9,378,523.68
  5. Step 5: Solve for x
    x = 9,378,523.68/3,657.20
  6. Step 6: Final answer
    x = 2,564.40

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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.