Home / 3,913.89-5,401.20-2,145.51

Finding the Fourth Proportional to 3,913.89, 5,401.20 and 2,145.51

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Solution

The fourth proportional to 3,913.89, 5,401.20 and 2,145.51 is: 2,960.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.89 : 5,401.20 = 2,145.51 : x
  2. Step 2: Convert to fraction form
    3,913.89/5,401.20 = 2,145.51/x
  3. Step 3: Cross multiply
    3,913.89x = 5,401.20 × 2,145.51
  4. Step 4: Simplify right side
    3,913.89x = 11,588,328.61
  5. Step 5: Solve for x
    x = 11,588,328.61/3,913.89
  6. Step 6: Final answer
    x = 2,960.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.