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Finding the Fourth Proportional to 3,881.67, 5,812.17 and 2,651.48

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Solution

The fourth proportional to 3,881.67, 5,812.17 and 2,651.48 is: 3,970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.67 : 5,812.17 = 2,651.48 : x
  2. Step 2: Convert to fraction form
    3,881.67/5,812.17 = 2,651.48/x
  3. Step 3: Cross multiply
    3,881.67x = 5,812.17 × 2,651.48
  4. Step 4: Simplify right side
    3,881.67x = 15,410,852.51
  5. Step 5: Solve for x
    x = 15,410,852.51/3,881.67
  6. Step 6: Final answer
    x = 3,970.16

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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.