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Finding the Fourth Proportional to 3,571.68, 4,929.16 and 1,999.92

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Solution

The fourth proportional to 3,571.68, 4,929.16 and 1,999.92 is: 2,760.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.68 : 4,929.16 = 1,999.92 : x
  2. Step 2: Convert to fraction form
    3,571.68/4,929.16 = 1,999.92/x
  3. Step 3: Cross multiply
    3,571.68x = 4,929.16 × 1,999.92
  4. Step 4: Simplify right side
    3,571.68x = 9,857,925.67
  5. Step 5: Solve for x
    x = 9,857,925.67/3,571.68
  6. Step 6: Final answer
    x = 2,760.02

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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.