Home / 3,425.60-5,135.52-1,778.60

Finding the Fourth Proportional to 3,425.60, 5,135.52 and 1,778.60

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Solution

The fourth proportional to 3,425.60, 5,135.52 and 1,778.60 is: 2,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.60 : 5,135.52 = 1,778.60 : x
  2. Step 2: Convert to fraction form
    3,425.60/5,135.52 = 1,778.60/x
  3. Step 3: Cross multiply
    3,425.60x = 5,135.52 × 1,778.60
  4. Step 4: Simplify right side
    3,425.60x = 9,134,035.87
  5. Step 5: Solve for x
    x = 9,134,035.87/3,425.60
  6. Step 6: Final answer
    x = 2,666.40

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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.