Home / 2,816.21-3,886.72-1,637.05

Finding the Fourth Proportional to 2,816.21, 3,886.72 and 1,637.05

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Solution

The fourth proportional to 2,816.21, 3,886.72 and 1,637.05 is: 2,259.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.21 : 3,886.72 = 1,637.05 : x
  2. Step 2: Convert to fraction form
    2,816.21/3,886.72 = 1,637.05/x
  3. Step 3: Cross multiply
    2,816.21x = 3,886.72 × 1,637.05
  4. Step 4: Simplify right side
    2,816.21x = 6,362,754.98
  5. Step 5: Solve for x
    x = 6,362,754.98/2,816.21
  6. Step 6: Final answer
    x = 2,259.34

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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.