Home / 9,138.60-13,705.74-3,941.64

Finding the Fourth Proportional to 9,138.60, 13,705.74 and 3,941.64

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Solution

The fourth proportional to 9,138.60, 13,705.74 and 3,941.64 is: 5,911.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.60 : 13,705.74 = 3,941.64 : x
  2. Step 2: Convert to fraction form
    9,138.60/13,705.74 = 3,941.64/x
  3. Step 3: Cross multiply
    9,138.60x = 13,705.74 × 3,941.64
  4. Step 4: Simplify right side
    9,138.60x = 54,023,093.01
  5. Step 5: Solve for x
    x = 54,023,093.01/9,138.60
  6. Step 6: Final answer
    x = 5,911.53

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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.