Home / 2,859.11-3,946.34-1,680.56

Finding the Fourth Proportional to 2,859.11, 3,946.34 and 1,680.56

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Solution

The fourth proportional to 2,859.11, 3,946.34 and 1,680.56 is: 2,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.11 : 3,946.34 = 1,680.56 : x
  2. Step 2: Convert to fraction form
    2,859.11/3,946.34 = 1,680.56/x
  3. Step 3: Cross multiply
    2,859.11x = 3,946.34 × 1,680.56
  4. Step 4: Simplify right side
    2,859.11x = 6,632,045.62
  5. Step 5: Solve for x
    x = 6,632,045.62/2,859.11
  6. Step 6: Final answer
    x = 2,319.62

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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.