Home / 3,911.76-5,401.26-2,587.32

Finding the Fourth Proportional to 3,911.76, 5,401.26 and 2,587.32

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Solution

The fourth proportional to 3,911.76, 5,401.26 and 2,587.32 is: 3,572.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.76 : 5,401.26 = 2,587.32 : x
  2. Step 2: Convert to fraction form
    3,911.76/5,401.26 = 2,587.32/x
  3. Step 3: Cross multiply
    3,911.76x = 5,401.26 × 2,587.32
  4. Step 4: Simplify right side
    3,911.76x = 13,974,788.02
  5. Step 5: Solve for x
    x = 13,974,788.02/3,911.76
  6. Step 6: Final answer
    x = 3,572.51

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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.