Home / 3,977.85-5,490.92-3,416.07

Finding the Fourth Proportional to 3,977.85, 5,490.92 and 3,416.07

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Solution

The fourth proportional to 3,977.85, 5,490.92 and 3,416.07 is: 4,715.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.85 : 5,490.92 = 3,416.07 : x
  2. Step 2: Convert to fraction form
    3,977.85/5,490.92 = 3,416.07/x
  3. Step 3: Cross multiply
    3,977.85x = 5,490.92 × 3,416.07
  4. Step 4: Simplify right side
    3,977.85x = 18,757,346.11
  5. Step 5: Solve for x
    x = 18,757,346.11/3,977.85
  6. Step 6: Final answer
    x = 4,715.44

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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.