Home / 3,879.95-5,816.61-1,687.01

Finding the Fourth Proportional to 3,879.95, 5,816.61 and 1,687.01

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Solution

The fourth proportional to 3,879.95, 5,816.61 and 1,687.01 is: 2,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.95 : 5,816.61 = 1,687.01 : x
  2. Step 2: Convert to fraction form
    3,879.95/5,816.61 = 1,687.01/x
  3. Step 3: Cross multiply
    3,879.95x = 5,816.61 × 1,687.01
  4. Step 4: Simplify right side
    3,879.95x = 9,812,650.15
  5. Step 5: Solve for x
    x = 9,812,650.15/3,879.95
  6. Step 6: Final answer
    x = 2,529.07

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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.