Home / 2,817.26-3,888.05-1,638.25

Finding the Fourth Proportional to 2,817.26, 3,888.05 and 1,638.25

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Solution

The fourth proportional to 2,817.26, 3,888.05 and 1,638.25 is: 2,260.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.26 : 3,888.05 = 1,638.25 : x
  2. Step 2: Convert to fraction form
    2,817.26/3,888.05 = 1,638.25/x
  3. Step 3: Cross multiply
    2,817.26x = 3,888.05 × 1,638.25
  4. Step 4: Simplify right side
    2,817.26x = 6,369,597.91
  5. Step 5: Solve for x
    x = 6,369,597.91/2,817.26
  6. Step 6: Final answer
    x = 2,260.92

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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.