Home / 3,717.72-5,130.46-2,145.81

Finding the Fourth Proportional to 3,717.72, 5,130.46 and 2,145.81

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Solution

The fourth proportional to 3,717.72, 5,130.46 and 2,145.81 is: 2,961.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.72 : 5,130.46 = 2,145.81 : x
  2. Step 2: Convert to fraction form
    3,717.72/5,130.46 = 2,145.81/x
  3. Step 3: Cross multiply
    3,717.72x = 5,130.46 × 2,145.81
  4. Step 4: Simplify right side
    3,717.72x = 11,008,981.64
  5. Step 5: Solve for x
    x = 11,008,981.64/3,717.72
  6. Step 6: Final answer
    x = 2,961.22

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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.