Home / 5,118.45-7,676.91-1,420.29

Finding the Fourth Proportional to 5,118.45, 7,676.91 and 1,420.29

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Solution

The fourth proportional to 5,118.45, 7,676.91 and 1,420.29 is: 2,130.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.45 : 7,676.91 = 1,420.29 : x
  2. Step 2: Convert to fraction form
    5,118.45/7,676.91 = 1,420.29/x
  3. Step 3: Cross multiply
    5,118.45x = 7,676.91 × 1,420.29
  4. Step 4: Simplify right side
    5,118.45x = 10,903,438.50
  5. Step 5: Solve for x
    x = 10,903,438.50/5,118.45
  6. Step 6: Final answer
    x = 2,130.22

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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.