Home / 7,421.34-11,137.65-2,745.77

Finding the Fourth Proportional to 7,421.34, 11,137.65 and 2,745.77

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Solution

The fourth proportional to 7,421.34, 11,137.65 and 2,745.77 is: 4,120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.34 : 11,137.65 = 2,745.77 : x
  2. Step 2: Convert to fraction form
    7,421.34/11,137.65 = 2,745.77/x
  3. Step 3: Cross multiply
    7,421.34x = 11,137.65 × 2,745.77
  4. Step 4: Simplify right side
    7,421.34x = 30,581,425.24
  5. Step 5: Solve for x
    x = 30,581,425.24/7,421.34
  6. Step 6: Final answer
    x = 4,120.74

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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.