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Finding the Fourth Proportional to 5,678.68, 7,836.07 and 3,160.93

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Solution

The fourth proportional to 5,678.68, 7,836.07 and 3,160.93 is: 4,361.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.68 : 7,836.07 = 3,160.93 : x
  2. Step 2: Convert to fraction form
    5,678.68/7,836.07 = 3,160.93/x
  3. Step 3: Cross multiply
    5,678.68x = 7,836.07 × 3,160.93
  4. Step 4: Simplify right side
    5,678.68x = 24,769,268.75
  5. Step 5: Solve for x
    x = 24,769,268.75/5,678.68
  6. Step 6: Final answer
    x = 4,361.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.