Home / 6,921.83-10,381.45-1,856.09

Finding the Fourth Proportional to 6,921.83, 10,381.45 and 1,856.09

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Solution

The fourth proportional to 6,921.83, 10,381.45 and 1,856.09 is: 2,783.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.83 : 10,381.45 = 1,856.09 : x
  2. Step 2: Convert to fraction form
    6,921.83/10,381.45 = 1,856.09/x
  3. Step 3: Cross multiply
    6,921.83x = 10,381.45 × 1,856.09
  4. Step 4: Simplify right side
    6,921.83x = 19,268,930.32
  5. Step 5: Solve for x
    x = 19,268,930.32/6,921.83
  6. Step 6: Final answer
    x = 2,783.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.