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Finding the Fourth Proportional to 5,281.05, 7,923.07 and 2,645.37

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Solution

The fourth proportional to 5,281.05, 7,923.07 and 2,645.37 is: 3,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.05 : 7,923.07 = 2,645.37 : x
  2. Step 2: Convert to fraction form
    5,281.05/7,923.07 = 2,645.37/x
  3. Step 3: Cross multiply
    5,281.05x = 7,923.07 × 2,645.37
  4. Step 4: Simplify right side
    5,281.05x = 20,959,451.69
  5. Step 5: Solve for x
    x = 20,959,451.69/5,281.05
  6. Step 6: Final answer
    x = 3,968.80

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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.