Home / 2,389.31-3,583.82-1,421.57

Finding the Fourth Proportional to 2,389.31, 3,583.82 and 1,421.57

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Solution

The fourth proportional to 2,389.31, 3,583.82 and 1,421.57 is: 2,132.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.31 : 3,583.82 = 1,421.57 : x
  2. Step 2: Convert to fraction form
    2,389.31/3,583.82 = 1,421.57/x
  3. Step 3: Cross multiply
    2,389.31x = 3,583.82 × 1,421.57
  4. Step 4: Simplify right side
    2,389.31x = 5,094,625.97
  5. Step 5: Solve for x
    x = 5,094,625.97/2,389.31
  6. Step 6: Final answer
    x = 2,132.26

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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.