Home / 5,618.82-8,428.23-1,921.08

Finding the Fourth Proportional to 5,618.82, 8,428.23 and 1,921.08

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Solution

The fourth proportional to 5,618.82, 8,428.23 and 1,921.08 is: 2,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.82 : 8,428.23 = 1,921.08 : x
  2. Step 2: Convert to fraction form
    5,618.82/8,428.23 = 1,921.08/x
  3. Step 3: Cross multiply
    5,618.82x = 8,428.23 × 1,921.08
  4. Step 4: Simplify right side
    5,618.82x = 16,191,304.09
  5. Step 5: Solve for x
    x = 16,191,304.09/5,618.82
  6. Step 6: Final answer
    x = 2,881.62

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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.