Home / 3,878.31-5,816.46-1,412.93

Finding the Fourth Proportional to 3,878.31, 5,816.46 and 1,412.93

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Solution

The fourth proportional to 3,878.31, 5,816.46 and 1,412.93 is: 2,119.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.31 : 5,816.46 = 1,412.93 : x
  2. Step 2: Convert to fraction form
    3,878.31/5,816.46 = 1,412.93/x
  3. Step 3: Cross multiply
    3,878.31x = 5,816.46 × 1,412.93
  4. Step 4: Simplify right side
    3,878.31x = 8,218,221.75
  5. Step 5: Solve for x
    x = 8,218,221.75/3,878.31
  6. Step 6: Final answer
    x = 2,119.02

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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.