Home / 5,137.48-7,088.82-3,121

Finding the Fourth Proportional to 5,137.48, 7,088.82 and 3,121

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Solution

The fourth proportional to 5,137.48, 7,088.82 and 3,121 is: 4,306.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.48 : 7,088.82 = 3,121 : x
  2. Step 2: Convert to fraction form
    5,137.48/7,088.82 = 3,121/x
  3. Step 3: Cross multiply
    5,137.48x = 7,088.82 × 3,121
  4. Step 4: Simplify right side
    5,137.48x = 22,124,207.22
  5. Step 5: Solve for x
    x = 22,124,207.22/5,137.48
  6. Step 6: Final answer
    x = 4,306.43

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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.