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Finding the Fourth Proportional to 3,392.86, 4,682.05 and 1,900.87

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Solution

The fourth proportional to 3,392.86, 4,682.05 and 1,900.87 is: 2,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.86 : 4,682.05 = 1,900.87 : x
  2. Step 2: Convert to fraction form
    3,392.86/4,682.05 = 1,900.87/x
  3. Step 3: Cross multiply
    3,392.86x = 4,682.05 × 1,900.87
  4. Step 4: Simplify right side
    3,392.86x = 8,899,962.62
  5. Step 5: Solve for x
    x = 8,899,962.62/3,392.86
  6. Step 6: Final answer
    x = 2,623.14

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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.