Home / 5,181.48-7,772.70-1,719

Finding the Fourth Proportional to 5,181.48, 7,772.70 and 1,719

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Solution

The fourth proportional to 5,181.48, 7,772.70 and 1,719 is: 2,578.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.48 : 7,772.70 = 1,719 : x
  2. Step 2: Convert to fraction form
    5,181.48/7,772.70 = 1,719/x
  3. Step 3: Cross multiply
    5,181.48x = 7,772.70 × 1,719
  4. Step 4: Simplify right side
    5,181.48x = 13,361,271.30
  5. Step 5: Solve for x
    x = 13,361,271.30/5,181.48
  6. Step 6: Final answer
    x = 2,578.66

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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.