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Finding the Fourth Proportional to 8,358.99, 12,539.15 and 2,812.29

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Solution

The fourth proportional to 8,358.99, 12,539.15 and 2,812.29 is: 4,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.99 : 12,539.15 = 2,812.29 : x
  2. Step 2: Convert to fraction form
    8,358.99/12,539.15 = 2,812.29/x
  3. Step 3: Cross multiply
    8,358.99x = 12,539.15 × 2,812.29
  4. Step 4: Simplify right side
    8,358.99x = 35,263,712.09
  5. Step 5: Solve for x
    x = 35,263,712.09/8,358.99
  6. Step 6: Final answer
    x = 4,218.66

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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.