Home / 2,816.38-3,886.62-1,637.51

Finding the Fourth Proportional to 2,816.38, 3,886.62 and 1,637.51

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Solution

The fourth proportional to 2,816.38, 3,886.62 and 1,637.51 is: 2,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.38 : 3,886.62 = 1,637.51 : x
  2. Step 2: Convert to fraction form
    2,816.38/3,886.62 = 1,637.51/x
  3. Step 3: Cross multiply
    2,816.38x = 3,886.62 × 1,637.51
  4. Step 4: Simplify right side
    2,816.38x = 6,364,379.12
  5. Step 5: Solve for x
    x = 6,364,379.12/2,816.38
  6. Step 6: Final answer
    x = 2,259.78

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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.