Home / 6,690.21-9,232.32-3,857.55

Finding the Fourth Proportional to 6,690.21, 9,232.32 and 3,857.55

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Solution

The fourth proportional to 6,690.21, 9,232.32 and 3,857.55 is: 5,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.21 : 9,232.32 = 3,857.55 : x
  2. Step 2: Convert to fraction form
    6,690.21/9,232.32 = 3,857.55/x
  3. Step 3: Cross multiply
    6,690.21x = 9,232.32 × 3,857.55
  4. Step 4: Simplify right side
    6,690.21x = 35,614,136.02
  5. Step 5: Solve for x
    x = 35,614,136.02/6,690.21
  6. Step 6: Final answer
    x = 5,323.32

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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.