Home / 5,113.20-7,669.78-1,415.39

Finding the Fourth Proportional to 5,113.20, 7,669.78 and 1,415.39

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Solution

The fourth proportional to 5,113.20, 7,669.78 and 1,415.39 is: 2,123.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.20 : 7,669.78 = 1,415.39 : x
  2. Step 2: Convert to fraction form
    5,113.20/7,669.78 = 1,415.39/x
  3. Step 3: Cross multiply
    5,113.20x = 7,669.78 × 1,415.39
  4. Step 4: Simplify right side
    5,113.20x = 10,855,745.55
  5. Step 5: Solve for x
    x = 10,855,745.55/5,113.20
  6. Step 6: Final answer
    x = 2,123.08

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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.