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Finding the Fourth Proportional to 2,859.72, 3,946.56 and 1,740.48

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Solution

The fourth proportional to 2,859.72, 3,946.56 and 1,740.48 is: 2,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.72 : 3,946.56 = 1,740.48 : x
  2. Step 2: Convert to fraction form
    2,859.72/3,946.56 = 1,740.48/x
  3. Step 3: Cross multiply
    2,859.72x = 3,946.56 × 1,740.48
  4. Step 4: Simplify right side
    2,859.72x = 6,868,908.75
  5. Step 5: Solve for x
    x = 6,868,908.75/2,859.72
  6. Step 6: Final answer
    x = 2,401.95

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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.