Home / 2,486.12-3,428.34-1,553

Finding the Fourth Proportional to 2,486.12, 3,428.34 and 1,553

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Solution

The fourth proportional to 2,486.12, 3,428.34 and 1,553 is: 2,141.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.12 : 3,428.34 = 1,553 : x
  2. Step 2: Convert to fraction form
    2,486.12/3,428.34 = 1,553/x
  3. Step 3: Cross multiply
    2,486.12x = 3,428.34 × 1,553
  4. Step 4: Simplify right side
    2,486.12x = 5,324,212.02
  5. Step 5: Solve for x
    x = 5,324,212.02/2,486.12
  6. Step 6: Final answer
    x = 2,141.57

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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.