Home / 3,391.93-4,680.85-1,899.87

Finding the Fourth Proportional to 3,391.93, 4,680.85 and 1,899.87

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Solution

The fourth proportional to 3,391.93, 4,680.85 and 1,899.87 is: 2,621.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.93 : 4,680.85 = 1,899.87 : x
  2. Step 2: Convert to fraction form
    3,391.93/4,680.85 = 1,899.87/x
  3. Step 3: Cross multiply
    3,391.93x = 4,680.85 × 1,899.87
  4. Step 4: Simplify right side
    3,391.93x = 8,893,006.49
  5. Step 5: Solve for x
    x = 8,893,006.49/3,391.93
  6. Step 6: Final answer
    x = 2,621.81

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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.