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Finding the Fourth Proportional to 8,572.68, 12,860.61 and 3,893.01

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Solution

The fourth proportional to 8,572.68, 12,860.61 and 3,893.01 is: 5,840.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.68 : 12,860.61 = 3,893.01 : x
  2. Step 2: Convert to fraction form
    8,572.68/12,860.61 = 3,893.01/x
  3. Step 3: Cross multiply
    8,572.68x = 12,860.61 × 3,893.01
  4. Step 4: Simplify right side
    8,572.68x = 50,066,525.70
  5. Step 5: Solve for x
    x = 50,066,525.70/8,572.68
  6. Step 6: Final answer
    x = 5,840.24

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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.