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Finding the Fourth Proportional to 7,895.64, 11,850.28 and 3,218.23

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Solution

The fourth proportional to 7,895.64, 11,850.28 and 3,218.23 is: 4,830.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,895.64 : 11,850.28 = 3,218.23 : x
  2. Step 2: Convert to fraction form
    7,895.64/11,850.28 = 3,218.23/x
  3. Step 3: Cross multiply
    7,895.64x = 11,850.28 × 3,218.23
  4. Step 4: Simplify right side
    7,895.64x = 38,136,926.60
  5. Step 5: Solve for x
    x = 38,136,926.60/7,895.64
  6. Step 6: Final answer
    x = 4,830.12

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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.