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Finding the Fourth Proportional to 2,652.64, 3,981.12 and 1,885.12

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Solution

The fourth proportional to 2,652.64, 3,981.12 and 1,885.12 is: 2,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.64 : 3,981.12 = 1,885.12 : x
  2. Step 2: Convert to fraction form
    2,652.64/3,981.12 = 1,885.12/x
  3. Step 3: Cross multiply
    2,652.64x = 3,981.12 × 1,885.12
  4. Step 4: Simplify right side
    2,652.64x = 7,504,888.93
  5. Step 5: Solve for x
    x = 7,504,888.93/2,652.64
  6. Step 6: Final answer
    x = 2,829.22

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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.