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Finding the Fourth Proportional to 7,351.63, 11,038.38 and 7,220.41

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Solution

The fourth proportional to 7,351.63, 11,038.38 and 7,220.41 is: 10,841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.63 : 11,038.38 = 7,220.41 : x
  2. Step 2: Convert to fraction form
    7,351.63/11,038.38 = 7,220.41/x
  3. Step 3: Cross multiply
    7,351.63x = 11,038.38 × 7,220.41
  4. Step 4: Simplify right side
    7,351.63x = 79,701,629.34
  5. Step 5: Solve for x
    x = 79,701,629.34/7,351.63
  6. Step 6: Final answer
    x = 10,841.35

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1.5x scale

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.