Home / 7,788.14-11,679.32-4,089.98

Finding the Fourth Proportional to 7,788.14, 11,679.32 and 4,089.98

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Solution

The fourth proportional to 7,788.14, 11,679.32 and 4,089.98 is: 6,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.14 : 11,679.32 = 4,089.98 : x
  2. Step 2: Convert to fraction form
    7,788.14/11,679.32 = 4,089.98/x
  3. Step 3: Cross multiply
    7,788.14x = 11,679.32 × 4,089.98
  4. Step 4: Simplify right side
    7,788.14x = 47,768,106.37
  5. Step 5: Solve for x
    x = 47,768,106.37/7,788.14
  6. Step 6: Final answer
    x = 6,133.45

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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.