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Finding the Fourth Proportional to 6,687.90, 9,223.29 and 5,361.30

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Solution

The fourth proportional to 6,687.90, 9,223.29 and 5,361.30 is: 7,393.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.90 : 9,223.29 = 5,361.30 : x
  2. Step 2: Convert to fraction form
    6,687.90/9,223.29 = 5,361.30/x
  3. Step 3: Cross multiply
    6,687.90x = 9,223.29 × 5,361.30
  4. Step 4: Simplify right side
    6,687.90x = 49,448,824.68
  5. Step 5: Solve for x
    x = 49,448,824.68/6,687.90
  6. Step 6: Final answer
    x = 7,393.77

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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.