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Finding the Fourth Proportional to 3,929.94, 5,890.86 and 1,740.24

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Solution

The fourth proportional to 3,929.94, 5,890.86 and 1,740.24 is: 2,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.94 : 5,890.86 = 1,740.24 : x
  2. Step 2: Convert to fraction form
    3,929.94/5,890.86 = 1,740.24/x
  3. Step 3: Cross multiply
    3,929.94x = 5,890.86 × 1,740.24
  4. Step 4: Simplify right side
    3,929.94x = 10,251,510.21
  5. Step 5: Solve for x
    x = 10,251,510.21/3,929.94
  6. Step 6: Final answer
    x = 2,608.57

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1.5x scale

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.