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Finding the Fourth Proportional to 9,137.60, 12,612.28 and 5,361.32

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Solution

The fourth proportional to 9,137.60, 12,612.28 and 5,361.32 is: 7,400.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137.60 : 12,612.28 = 5,361.32 : x
  2. Step 2: Convert to fraction form
    9,137.60/12,612.28 = 5,361.32/x
  3. Step 3: Cross multiply
    9,137.60x = 12,612.28 × 5,361.32
  4. Step 4: Simplify right side
    9,137.60x = 67,618,469.01
  5. Step 5: Solve for x
    x = 67,618,469.01/9,137.60
  6. Step 6: Final answer
    x = 7,400.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.