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Finding the Fourth Proportional to 3,888.60, 5,827.14 and 2,857.56

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Solution

The fourth proportional to 3,888.60, 5,827.14 and 2,857.56 is: 4,282.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.60 : 5,827.14 = 2,857.56 : x
  2. Step 2: Convert to fraction form
    3,888.60/5,827.14 = 2,857.56/x
  3. Step 3: Cross multiply
    3,888.60x = 5,827.14 × 2,857.56
  4. Step 4: Simplify right side
    3,888.60x = 16,651,402.18
  5. Step 5: Solve for x
    x = 16,651,402.18/3,888.60
  6. Step 6: Final answer
    x = 4,282.11

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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.