Home / 3,391.07-4,679.78-1,898.64

Finding the Fourth Proportional to 3,391.07, 4,679.78 and 1,898.64

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Solution

The fourth proportional to 3,391.07, 4,679.78 and 1,898.64 is: 2,620.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.07 : 4,679.78 = 1,898.64 : x
  2. Step 2: Convert to fraction form
    3,391.07/4,679.78 = 1,898.64/x
  3. Step 3: Cross multiply
    3,391.07x = 4,679.78 × 1,898.64
  4. Step 4: Simplify right side
    3,391.07x = 8,885,208.01
  5. Step 5: Solve for x
    x = 8,885,208.01/3,391.07
  6. Step 6: Final answer
    x = 2,620.18

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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.