Home / 4,780.56-7,172.40-2,943.44

Finding the Fourth Proportional to 4,780.56, 7,172.40 and 2,943.44

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Solution

The fourth proportional to 4,780.56, 7,172.40 and 2,943.44 is: 4,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.56 : 7,172.40 = 2,943.44 : x
  2. Step 2: Convert to fraction form
    4,780.56/7,172.40 = 2,943.44/x
  3. Step 3: Cross multiply
    4,780.56x = 7,172.40 × 2,943.44
  4. Step 4: Simplify right side
    4,780.56x = 21,111,529.06
  5. Step 5: Solve for x
    x = 21,111,529.06/4,780.56
  6. Step 6: Final answer
    x = 4,416.12

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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.