Home / 5,118.23-7,677.50-1,420.73

Finding the Fourth Proportional to 5,118.23, 7,677.50 and 1,420.73

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Solution

The fourth proportional to 5,118.23, 7,677.50 and 1,420.73 is: 2,131.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.23 : 7,677.50 = 1,420.73 : x
  2. Step 2: Convert to fraction form
    5,118.23/7,677.50 = 1,420.73/x
  3. Step 3: Cross multiply
    5,118.23x = 7,677.50 × 1,420.73
  4. Step 4: Simplify right side
    5,118.23x = 10,907,689.05
  5. Step 5: Solve for x
    x = 10,907,689.05/5,118.23
  6. Step 6: Final answer
    x = 2,131.14

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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.