Home / 5,119.36-7,680.66-1,832.40

Finding the Fourth Proportional to 5,119.36, 7,680.66 and 1,832.40

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Solution

The fourth proportional to 5,119.36, 7,680.66 and 1,832.40 is: 2,749.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.36 : 7,680.66 = 1,832.40 : x
  2. Step 2: Convert to fraction form
    5,119.36/7,680.66 = 1,832.40/x
  3. Step 3: Cross multiply
    5,119.36x = 7,680.66 × 1,832.40
  4. Step 4: Simplify right side
    5,119.36x = 14,074,041.38
  5. Step 5: Solve for x
    x = 14,074,041.38/5,119.36
  6. Step 6: Final answer
    x = 2,749.18

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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.