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Finding the Fourth Proportional to 7,804.79, 10,770.90 and 4,448.12

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Solution

The fourth proportional to 7,804.79, 10,770.90 and 4,448.12 is: 6,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,804.79 : 10,770.90 = 4,448.12 : x
  2. Step 2: Convert to fraction form
    7,804.79/10,770.90 = 4,448.12/x
  3. Step 3: Cross multiply
    7,804.79x = 10,770.90 × 4,448.12
  4. Step 4: Simplify right side
    7,804.79x = 47,910,201.85
  5. Step 5: Solve for x
    x = 47,910,201.85/7,804.79
  6. Step 6: Final answer
    x = 6,138.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.