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Finding the Fourth Proportional to 8,572.98, 12,859.64 and 3,026.21

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Solution

The fourth proportional to 8,572.98, 12,859.64 and 3,026.21 is: 4,539.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.98 : 12,859.64 = 3,026.21 : x
  2. Step 2: Convert to fraction form
    8,572.98/12,859.64 = 3,026.21/x
  3. Step 3: Cross multiply
    8,572.98x = 12,859.64 × 3,026.21
  4. Step 4: Simplify right side
    8,572.98x = 38,915,971.16
  5. Step 5: Solve for x
    x = 38,915,971.16/8,572.98
  6. Step 6: Final answer
    x = 4,539.38

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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.