Home / 4,783.20-7,172.64-1,705.28

Finding the Fourth Proportional to 4,783.20, 7,172.64 and 1,705.28

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Solution

The fourth proportional to 4,783.20, 7,172.64 and 1,705.28 is: 2,557.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,783.20 : 7,172.64 = 1,705.28 : x
  2. Step 2: Convert to fraction form
    4,783.20/7,172.64 = 1,705.28/x
  3. Step 3: Cross multiply
    4,783.20x = 7,172.64 × 1,705.28
  4. Step 4: Simplify right side
    4,783.20x = 12,231,359.54
  5. Step 5: Solve for x
    x = 12,231,359.54/4,783.20
  6. Step 6: Final answer
    x = 2,557.15

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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.