Home / 3,927.32-5,420.06-2,159.27

Finding the Fourth Proportional to 3,927.32, 5,420.06 and 2,159.27

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Solution

The fourth proportional to 3,927.32, 5,420.06 and 2,159.27 is: 2,979.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.32 : 5,420.06 = 2,159.27 : x
  2. Step 2: Convert to fraction form
    3,927.32/5,420.06 = 2,159.27/x
  3. Step 3: Cross multiply
    3,927.32x = 5,420.06 × 2,159.27
  4. Step 4: Simplify right side
    3,927.32x = 11,703,372.96
  5. Step 5: Solve for x
    x = 11,703,372.96/3,927.32
  6. Step 6: Final answer
    x = 2,979.99

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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.