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Finding the Fourth Proportional to 5,407.96, 8,109.78 and 2,907.22

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Solution

The fourth proportional to 5,407.96, 8,109.78 and 2,907.22 is: 4,359.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.96 : 8,109.78 = 2,907.22 : x
  2. Step 2: Convert to fraction form
    5,407.96/8,109.78 = 2,907.22/x
  3. Step 3: Cross multiply
    5,407.96x = 8,109.78 × 2,907.22
  4. Step 4: Simplify right side
    5,407.96x = 23,576,914.61
  5. Step 5: Solve for x
    x = 23,576,914.61/5,407.96
  6. Step 6: Final answer
    x = 4,359.67

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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.