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Finding the Fourth Proportional to 7,352.13, 11,039.13 and 7,220.91

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Solution

The fourth proportional to 7,352.13, 11,039.13 and 7,220.91 is: 10,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,352.13 : 11,039.13 = 7,220.91 : x
  2. Step 2: Convert to fraction form
    7,352.13/11,039.13 = 7,220.91/x
  3. Step 3: Cross multiply
    7,352.13x = 11,039.13 × 7,220.91
  4. Step 4: Simplify right side
    7,352.13x = 79,712,564.21
  5. Step 5: Solve for x
    x = 79,712,564.21/7,352.13
  6. Step 6: Final answer
    x = 10,842.10

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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.