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Finding the Fourth Proportional to 9,418.95, 12,993.62 and 5,641.11

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Solution

The fourth proportional to 9,418.95, 12,993.62 and 5,641.11 is: 7,782.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,418.95 : 12,993.62 = 5,641.11 : x
  2. Step 2: Convert to fraction form
    9,418.95/12,993.62 = 5,641.11/x
  3. Step 3: Cross multiply
    9,418.95x = 12,993.62 × 5,641.11
  4. Step 4: Simplify right side
    9,418.95x = 73,298,411.51
  5. Step 5: Solve for x
    x = 73,298,411.51/9,418.95
  6. Step 6: Final answer
    x = 7,782.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.