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Finding the Fourth Proportional to 7,788.84, 10,755.84 and 4,999.20

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Solution

The fourth proportional to 7,788.84, 10,755.84 and 4,999.20 is: 6,903.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.84 : 10,755.84 = 4,999.20 : x
  2. Step 2: Convert to fraction form
    7,788.84/10,755.84 = 4,999.20/x
  3. Step 3: Cross multiply
    7,788.84x = 10,755.84 × 4,999.20
  4. Step 4: Simplify right side
    7,788.84x = 53,770,595.33
  5. Step 5: Solve for x
    x = 53,770,595.33/7,788.84
  6. Step 6: Final answer
    x = 6,903.54

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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.