Home / 2,149.60-3,223.58-917.58

Finding the Fourth Proportional to 2,149.60, 3,223.58 and 917.58

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Solution

The fourth proportional to 2,149.60, 3,223.58 and 917.58 is: 1,376.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.60 : 3,223.58 = 917.58 : x
  2. Step 2: Convert to fraction form
    2,149.60/3,223.58 = 917.58/x
  3. Step 3: Cross multiply
    2,149.60x = 3,223.58 × 917.58
  4. Step 4: Simplify right side
    2,149.60x = 2,957,892.54
  5. Step 5: Solve for x
    x = 2,957,892.54/2,149.60
  6. Step 6: Final answer
    x = 1,376.02

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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.