Home / 8,378.82-12,561.03-4,678.02

Finding the Fourth Proportional to 8,378.82, 12,561.03 and 4,678.02

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Solution

The fourth proportional to 8,378.82, 12,561.03 and 4,678.02 is: 7,013.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.82 : 12,561.03 = 4,678.02 : x
  2. Step 2: Convert to fraction form
    8,378.82/12,561.03 = 4,678.02/x
  3. Step 3: Cross multiply
    8,378.82x = 12,561.03 × 4,678.02
  4. Step 4: Simplify right side
    8,378.82x = 58,760,749.56
  5. Step 5: Solve for x
    x = 58,760,749.56/8,378.82
  6. Step 6: Final answer
    x = 7,013.01

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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.