Home / 2,817.27-3,888.17-1,638.34

Finding the Fourth Proportional to 2,817.27, 3,888.17 and 1,638.34

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Solution

The fourth proportional to 2,817.27, 3,888.17 and 1,638.34 is: 2,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.27 : 3,888.17 = 1,638.34 : x
  2. Step 2: Convert to fraction form
    2,817.27/3,888.17 = 1,638.34/x
  3. Step 3: Cross multiply
    2,817.27x = 3,888.17 × 1,638.34
  4. Step 4: Simplify right side
    2,817.27x = 6,370,116.81
  5. Step 5: Solve for x
    x = 6,370,116.81/2,817.27
  6. Step 6: Final answer
    x = 2,261.10

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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.