Home / 3,925.10-5,416.68-2,156.66

Finding the Fourth Proportional to 3,925.10, 5,416.68 and 2,156.66

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Solution

The fourth proportional to 3,925.10, 5,416.68 and 2,156.66 is: 2,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.10 : 5,416.68 = 2,156.66 : x
  2. Step 2: Convert to fraction form
    3,925.10/5,416.68 = 2,156.66/x
  3. Step 3: Cross multiply
    3,925.10x = 5,416.68 × 2,156.66
  4. Step 4: Simplify right side
    3,925.10x = 11,681,937.09
  5. Step 5: Solve for x
    x = 11,681,937.09/3,925.10
  6. Step 6: Final answer
    x = 2,976.21

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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.