Home / 3,431.46-5,143.95-1,698.06

Finding the Fourth Proportional to 3,431.46, 5,143.95 and 1,698.06

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Solution

The fourth proportional to 3,431.46, 5,143.95 and 1,698.06 is: 2,545.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.46 : 5,143.95 = 1,698.06 : x
  2. Step 2: Convert to fraction form
    3,431.46/5,143.95 = 1,698.06/x
  3. Step 3: Cross multiply
    3,431.46x = 5,143.95 × 1,698.06
  4. Step 4: Simplify right side
    3,431.46x = 8,734,735.74
  5. Step 5: Solve for x
    x = 8,734,735.74/3,431.46
  6. Step 6: Final answer
    x = 2,545.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.