Home / 3,391.05-4,679.43-1,898.72

Finding the Fourth Proportional to 3,391.05, 4,679.43 and 1,898.72

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Solution

The fourth proportional to 3,391.05, 4,679.43 and 1,898.72 is: 2,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.05 : 4,679.43 = 1,898.72 : x
  2. Step 2: Convert to fraction form
    3,391.05/4,679.43 = 1,898.72/x
  3. Step 3: Cross multiply
    3,391.05x = 4,679.43 × 1,898.72
  4. Step 4: Simplify right side
    3,391.05x = 8,884,903.93
  5. Step 5: Solve for x
    x = 8,884,903.93/3,391.05
  6. Step 6: Final answer
    x = 2,620.10

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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.