Home / 3,925.05-5,416.91-2,157.02

Finding the Fourth Proportional to 3,925.05, 5,416.91 and 2,157.02

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Solution

The fourth proportional to 3,925.05, 5,416.91 and 2,157.02 is: 2,976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.05 : 5,416.91 = 2,157.02 : x
  2. Step 2: Convert to fraction form
    3,925.05/5,416.91 = 2,157.02/x
  3. Step 3: Cross multiply
    3,925.05x = 5,416.91 × 2,157.02
  4. Step 4: Simplify right side
    3,925.05x = 11,684,402.14
  5. Step 5: Solve for x
    x = 11,684,402.14/3,925.05
  6. Step 6: Final answer
    x = 2,976.88

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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.