Home / 2,859.96-3,946.68-1,680.76

Finding the Fourth Proportional to 2,859.96, 3,946.68 and 1,680.76

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Solution

The fourth proportional to 2,859.96, 3,946.68 and 1,680.76 is: 2,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.96 : 3,946.68 = 1,680.76 : x
  2. Step 2: Convert to fraction form
    2,859.96/3,946.68 = 1,680.76/x
  3. Step 3: Cross multiply
    2,859.96x = 3,946.68 × 1,680.76
  4. Step 4: Simplify right side
    2,859.96x = 6,633,421.88
  5. Step 5: Solve for x
    x = 6,633,421.88/2,859.96
  6. Step 6: Final answer
    x = 2,319.41

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Double scale
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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.