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Finding the Fourth Proportional to 2,959.70, 4,083.45 and 1,717.70

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Solution

The fourth proportional to 2,959.70, 4,083.45 and 1,717.70 is: 2,369.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.70 : 4,083.45 = 1,717.70 : x
  2. Step 2: Convert to fraction form
    2,959.70/4,083.45 = 1,717.70/x
  3. Step 3: Cross multiply
    2,959.70x = 4,083.45 × 1,717.70
  4. Step 4: Simplify right side
    2,959.70x = 7,014,142.07
  5. Step 5: Solve for x
    x = 7,014,142.07/2,959.70
  6. Step 6: Final answer
    x = 2,369.88

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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.