Home / 5,089.60-7,628.72-2,620.96

Finding the Fourth Proportional to 5,089.60, 7,628.72 and 2,620.96

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Solution

The fourth proportional to 5,089.60, 7,628.72 and 2,620.96 is: 3,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.60 : 7,628.72 = 2,620.96 : x
  2. Step 2: Convert to fraction form
    5,089.60/7,628.72 = 2,620.96/x
  3. Step 3: Cross multiply
    5,089.60x = 7,628.72 × 2,620.96
  4. Step 4: Simplify right side
    5,089.60x = 19,994,569.97
  5. Step 5: Solve for x
    x = 19,994,569.97/5,089.60
  6. Step 6: Final answer
    x = 3,928.52

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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.