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Finding the Fourth Proportional to 2,370.70, 3,550.92 and 1,720

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Solution

The fourth proportional to 2,370.70, 3,550.92 and 1,720 is: 2,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.70 : 3,550.92 = 1,720 : x
  2. Step 2: Convert to fraction form
    2,370.70/3,550.92 = 1,720/x
  3. Step 3: Cross multiply
    2,370.70x = 3,550.92 × 1,720
  4. Step 4: Simplify right side
    2,370.70x = 6,107,582.40
  5. Step 5: Solve for x
    x = 6,107,582.40/2,370.70
  6. Step 6: Final answer
    x = 2,576.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.