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Finding the Fourth Proportional to 8,831.16, 13,245.30 and 2,907.99

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Solution

The fourth proportional to 8,831.16, 13,245.30 and 2,907.99 is: 4,361.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,831.16 : 13,245.30 = 2,907.99 : x
  2. Step 2: Convert to fraction form
    8,831.16/13,245.30 = 2,907.99/x
  3. Step 3: Cross multiply
    8,831.16x = 13,245.30 × 2,907.99
  4. Step 4: Simplify right side
    8,831.16x = 38,517,199.95
  5. Step 5: Solve for x
    x = 38,517,199.95/8,831.16
  6. Step 6: Final answer
    x = 4,361.51

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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.