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Finding the Fourth Proportional to 8,085.76, 12,129.93 and 2,822.23

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Solution

The fourth proportional to 8,085.76, 12,129.93 and 2,822.23 is: 4,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.76 : 12,129.93 = 2,822.23 : x
  2. Step 2: Convert to fraction form
    8,085.76/12,129.93 = 2,822.23/x
  3. Step 3: Cross multiply
    8,085.76x = 12,129.93 × 2,822.23
  4. Step 4: Simplify right side
    8,085.76x = 34,233,452.34
  5. Step 5: Solve for x
    x = 34,233,452.34/8,085.76
  6. Step 6: Final answer
    x = 4,233.80

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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.