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Finding the Fourth Proportional to 5,361.78, 8,039.84 and 2,071.56

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Solution

The fourth proportional to 5,361.78, 8,039.84 and 2,071.56 is: 3,106.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,361.78 : 8,039.84 = 2,071.56 : x
  2. Step 2: Convert to fraction form
    5,361.78/8,039.84 = 2,071.56/x
  3. Step 3: Cross multiply
    5,361.78x = 8,039.84 × 2,071.56
  4. Step 4: Simplify right side
    5,361.78x = 16,655,010.95
  5. Step 5: Solve for x
    x = 16,655,010.95/5,361.78
  6. Step 6: Final answer
    x = 3,106.25

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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.