Home / 3,391.09-4,679.87-1,898.71

Finding the Fourth Proportional to 3,391.09, 4,679.87 and 1,898.71

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Solution

The fourth proportional to 3,391.09, 4,679.87 and 1,898.71 is: 2,620.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.09 : 4,679.87 = 1,898.71 : x
  2. Step 2: Convert to fraction form
    3,391.09/4,679.87 = 1,898.71/x
  3. Step 3: Cross multiply
    3,391.09x = 4,679.87 × 1,898.71
  4. Step 4: Simplify right side
    3,391.09x = 8,885,715.97
  5. Step 5: Solve for x
    x = 8,885,715.97/3,391.09
  6. Step 6: Final answer
    x = 2,620.31

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1.5x scale

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.