Home / 6,690.84-9,232.20-3,857.58

Finding the Fourth Proportional to 6,690.84, 9,232.20 and 3,857.58

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Solution

The fourth proportional to 6,690.84, 9,232.20 and 3,857.58 is: 5,322.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.84 : 9,232.20 = 3,857.58 : x
  2. Step 2: Convert to fraction form
    6,690.84/9,232.20 = 3,857.58/x
  3. Step 3: Cross multiply
    6,690.84x = 9,232.20 × 3,857.58
  4. Step 4: Simplify right side
    6,690.84x = 35,613,950.08
  5. Step 5: Solve for x
    x = 35,613,950.08/6,690.84
  6. Step 6: Final answer
    x = 5,322.79

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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.