Home / 2,816.61-3,887.26-1,637.68

Finding the Fourth Proportional to 2,816.61, 3,887.26 and 1,637.68

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Solution

The fourth proportional to 2,816.61, 3,887.26 and 1,637.68 is: 2,260.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.61 : 3,887.26 = 1,637.68 : x
  2. Step 2: Convert to fraction form
    2,816.61/3,887.26 = 1,637.68/x
  3. Step 3: Cross multiply
    2,816.61x = 3,887.26 × 1,637.68
  4. Step 4: Simplify right side
    2,816.61x = 6,366,086.93
  5. Step 5: Solve for x
    x = 6,366,086.93/2,816.61
  6. Step 6: Final answer
    x = 2,260.19

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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.