Home / 7,429.19-11,137.64-3,478.41

Finding the Fourth Proportional to 7,429.19, 11,137.64 and 3,478.41

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Solution

The fourth proportional to 7,429.19, 11,137.64 and 3,478.41 is: 5,214.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,429.19 : 11,137.64 = 3,478.41 : x
  2. Step 2: Convert to fraction form
    7,429.19/11,137.64 = 3,478.41/x
  3. Step 3: Cross multiply
    7,429.19x = 11,137.64 × 3,478.41
  4. Step 4: Simplify right side
    7,429.19x = 38,741,260.96
  5. Step 5: Solve for x
    x = 38,741,260.96/7,429.19
  6. Step 6: Final answer
    x = 5,214.74

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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.