Home / 2,859.20-3,946.32-1,680.95

Finding the Fourth Proportional to 2,859.20, 3,946.32 and 1,680.95

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Solution

The fourth proportional to 2,859.20, 3,946.32 and 1,680.95 is: 2,320.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.20 : 3,946.32 = 1,680.95 : x
  2. Step 2: Convert to fraction form
    2,859.20/3,946.32 = 1,680.95/x
  3. Step 3: Cross multiply
    2,859.20x = 3,946.32 × 1,680.95
  4. Step 4: Simplify right side
    2,859.20x = 6,633,576.47
  5. Step 5: Solve for x
    x = 6,633,576.47/2,859.20
  6. Step 6: Final answer
    x = 2,320.08

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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.