Home / 5,051.81-7,578.20-1,722.39

Finding the Fourth Proportional to 5,051.81, 7,578.20 and 1,722.39

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Solution

The fourth proportional to 5,051.81, 7,578.20 and 1,722.39 is: 2,583.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,051.81 : 7,578.20 = 1,722.39 : x
  2. Step 2: Convert to fraction form
    5,051.81/7,578.20 = 1,722.39/x
  3. Step 3: Cross multiply
    5,051.81x = 7,578.20 × 1,722.39
  4. Step 4: Simplify right side
    5,051.81x = 13,052,607.29
  5. Step 5: Solve for x
    x = 13,052,607.29/5,051.81
  6. Step 6: Final answer
    x = 2,583.75

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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.