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Finding the Fourth Proportional to 7,907.19, 10,914.20 and 5,220.37

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Solution

The fourth proportional to 7,907.19, 10,914.20 and 5,220.37 is: 7,205.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.19 : 10,914.20 = 5,220.37 : x
  2. Step 2: Convert to fraction form
    7,907.19/10,914.20 = 5,220.37/x
  3. Step 3: Cross multiply
    7,907.19x = 10,914.20 × 5,220.37
  4. Step 4: Simplify right side
    7,907.19x = 56,976,162.25
  5. Step 5: Solve for x
    x = 56,976,162.25/7,907.19
  6. Step 6: Final answer
    x = 7,205.61

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.