Home / 3,521.64-4,859.29-2,105.90

Finding the Fourth Proportional to 3,521.64, 4,859.29 and 2,105.90

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Solution

The fourth proportional to 3,521.64, 4,859.29 and 2,105.90 is: 2,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.64 : 4,859.29 = 2,105.90 : x
  2. Step 2: Convert to fraction form
    3,521.64/4,859.29 = 2,105.90/x
  3. Step 3: Cross multiply
    3,521.64x = 4,859.29 × 2,105.90
  4. Step 4: Simplify right side
    3,521.64x = 10,233,178.81
  5. Step 5: Solve for x
    x = 10,233,178.81/3,521.64
  6. Step 6: Final answer
    x = 2,905.80

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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.