Home / 2,817.14-3,886.09-1,638.08

Finding the Fourth Proportional to 2,817.14, 3,886.09 and 1,638.08

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Solution

The fourth proportional to 2,817.14, 3,886.09 and 1,638.08 is: 2,259.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.14 : 3,886.09 = 1,638.08 : x
  2. Step 2: Convert to fraction form
    2,817.14/3,886.09 = 1,638.08/x
  3. Step 3: Cross multiply
    2,817.14x = 3,886.09 × 1,638.08
  4. Step 4: Simplify right side
    2,817.14x = 6,365,726.31
  5. Step 5: Solve for x
    x = 6,365,726.31/2,817.14
  6. Step 6: Final answer
    x = 2,259.64

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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.