Home / 3,970.86-5,474.49-2,908.92

Finding the Fourth Proportional to 3,970.86, 5,474.49 and 2,908.92

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Solution

The fourth proportional to 3,970.86, 5,474.49 and 2,908.92 is: 4,010.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.86 : 5,474.49 = 2,908.92 : x
  2. Step 2: Convert to fraction form
    3,970.86/5,474.49 = 2,908.92/x
  3. Step 3: Cross multiply
    3,970.86x = 5,474.49 × 2,908.92
  4. Step 4: Simplify right side
    3,970.86x = 15,924,853.45
  5. Step 5: Solve for x
    x = 15,924,853.45/3,970.86
  6. Step 6: Final answer
    x = 4,010.43

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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.