Home / 2,816.80-3,886.96-1,637.92

Finding the Fourth Proportional to 2,816.80, 3,886.96 and 1,637.92

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Solution

The fourth proportional to 2,816.80, 3,886.96 and 1,637.92 is: 2,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.80 : 3,886.96 = 1,637.92 : x
  2. Step 2: Convert to fraction form
    2,816.80/3,886.96 = 1,637.92/x
  3. Step 3: Cross multiply
    2,816.80x = 3,886.96 × 1,637.92
  4. Step 4: Simplify right side
    2,816.80x = 6,366,529.52
  5. Step 5: Solve for x
    x = 6,366,529.52/2,816.80
  6. Step 6: Final answer
    x = 2,260.20

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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.