Home / 3,878.09-5,816.99-1,686.83

Finding the Fourth Proportional to 3,878.09, 5,816.99 and 1,686.83

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Solution

The fourth proportional to 3,878.09, 5,816.99 and 1,686.83 is: 2,530.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.09 : 5,816.99 = 1,686.83 : x
  2. Step 2: Convert to fraction form
    3,878.09/5,816.99 = 1,686.83/x
  3. Step 3: Cross multiply
    3,878.09x = 5,816.99 × 1,686.83
  4. Step 4: Simplify right side
    3,878.09x = 9,812,235.72
  5. Step 5: Solve for x
    x = 9,812,235.72/3,878.09
  6. Step 6: Final answer
    x = 2,530.18

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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.