Home / 7,740.24-11,603.88-3,120

Finding the Fourth Proportional to 7,740.24, 11,603.88 and 3,120

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Solution

The fourth proportional to 7,740.24, 11,603.88 and 3,120 is: 4,677.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.24 : 11,603.88 = 3,120 : x
  2. Step 2: Convert to fraction form
    7,740.24/11,603.88 = 3,120/x
  3. Step 3: Cross multiply
    7,740.24x = 11,603.88 × 3,120
  4. Step 4: Simplify right side
    7,740.24x = 36,204,105.60
  5. Step 5: Solve for x
    x = 36,204,105.60/7,740.24
  6. Step 6: Final answer
    x = 4,677.39

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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.