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Finding the Fourth Proportional to 3,210.90, 4,816.74 and 1,018.86

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Solution

The fourth proportional to 3,210.90, 4,816.74 and 1,018.86 is: 1,528.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.90 : 4,816.74 = 1,018.86 : x
  2. Step 2: Convert to fraction form
    3,210.90/4,816.74 = 1,018.86/x
  3. Step 3: Cross multiply
    3,210.90x = 4,816.74 × 1,018.86
  4. Step 4: Simplify right side
    3,210.90x = 4,907,583.72
  5. Step 5: Solve for x
    x = 4,907,583.72/3,210.90
  6. Step 6: Final answer
    x = 1,528.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.