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Finding the Fourth Proportional to 8,572.48, 12,858.87 and 3,025.72

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Solution

The fourth proportional to 8,572.48, 12,858.87 and 3,025.72 is: 4,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.48 : 12,858.87 = 3,025.72 : x
  2. Step 2: Convert to fraction form
    8,572.48/12,858.87 = 3,025.72/x
  3. Step 3: Cross multiply
    8,572.48x = 12,858.87 × 3,025.72
  4. Step 4: Simplify right side
    8,572.48x = 38,907,340.14
  5. Step 5: Solve for x
    x = 38,907,340.14/8,572.48
  6. Step 6: Final answer
    x = 4,538.63

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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.