Home / 2,817.02-3,888.14-1,638.27

Finding the Fourth Proportional to 2,817.02, 3,888.14 and 1,638.27

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Solution

The fourth proportional to 2,817.02, 3,888.14 and 1,638.27 is: 2,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.02 : 3,888.14 = 1,638.27 : x
  2. Step 2: Convert to fraction form
    2,817.02/3,888.14 = 1,638.27/x
  3. Step 3: Cross multiply
    2,817.02x = 3,888.14 × 1,638.27
  4. Step 4: Simplify right side
    2,817.02x = 6,369,814.93
  5. Step 5: Solve for x
    x = 6,369,814.93/2,817.02
  6. Step 6: Final answer
    x = 2,261.19

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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.