Home / 2,861-3,948.12-1,682.16

Finding the Fourth Proportional to 2,861, 3,948.12 and 1,682.16

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Solution

The fourth proportional to 2,861, 3,948.12 and 1,682.16 is: 2,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861 : 3,948.12 = 1,682.16 : x
  2. Step 2: Convert to fraction form
    2,861/3,948.12 = 1,682.16/x
  3. Step 3: Cross multiply
    2,861x = 3,948.12 × 1,682.16
  4. Step 4: Simplify right side
    2,861x = 6,641,369.54
  5. Step 5: Solve for x
    x = 6,641,369.54/2,861
  6. Step 6: Final answer
    x = 2,321.35

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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.