Home / 2,126.49-3,181.53-2,121.02

Finding the Fourth Proportional to 2,126.49, 3,181.53 and 2,121.02

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Solution

The fourth proportional to 2,126.49, 3,181.53 and 2,121.02 is: 3,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.49 : 3,181.53 = 2,121.02 : x
  2. Step 2: Convert to fraction form
    2,126.49/3,181.53 = 2,121.02/x
  3. Step 3: Cross multiply
    2,126.49x = 3,181.53 × 2,121.02
  4. Step 4: Simplify right side
    2,126.49x = 6,748,078.16
  5. Step 5: Solve for x
    x = 6,748,078.16/2,126.49
  6. Step 6: Final answer
    x = 3,173.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.