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Finding the Fourth Proportional to 2,790.16, 4,184.92 and 738.32

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Solution

The fourth proportional to 2,790.16, 4,184.92 and 738.32 is: 1,107.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.16 : 4,184.92 = 738.32 : x
  2. Step 2: Convert to fraction form
    2,790.16/4,184.92 = 738.32/x
  3. Step 3: Cross multiply
    2,790.16x = 4,184.92 × 738.32
  4. Step 4: Simplify right side
    2,790.16x = 3,089,810.13
  5. Step 5: Solve for x
    x = 3,089,810.13/2,790.16
  6. Step 6: Final answer
    x = 1,107.40

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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.