Home / 3,927.56-5,419.90-2,159.12

Finding the Fourth Proportional to 3,927.56, 5,419.90 and 2,159.12

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Solution

The fourth proportional to 3,927.56, 5,419.90 and 2,159.12 is: 2,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.56 : 5,419.90 = 2,159.12 : x
  2. Step 2: Convert to fraction form
    3,927.56/5,419.90 = 2,159.12/x
  3. Step 3: Cross multiply
    3,927.56x = 5,419.90 × 2,159.12
  4. Step 4: Simplify right side
    3,927.56x = 11,702,214.49
  5. Step 5: Solve for x
    x = 11,702,214.49/3,927.56
  6. Step 6: Final answer
    x = 2,979.51

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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.