Home / 3,617.60-5,423.20-1,308.64

Finding the Fourth Proportional to 3,617.60, 5,423.20 and 1,308.64

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Solution

The fourth proportional to 3,617.60, 5,423.20 and 1,308.64 is: 1,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.60 : 5,423.20 = 1,308.64 : x
  2. Step 2: Convert to fraction form
    3,617.60/5,423.20 = 1,308.64/x
  3. Step 3: Cross multiply
    3,617.60x = 5,423.20 × 1,308.64
  4. Step 4: Simplify right side
    3,617.60x = 7,097,016.45
  5. Step 5: Solve for x
    x = 7,097,016.45/3,617.60
  6. Step 6: Final answer
    x = 1,961.80

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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.