Home / 2,418.12-3,339.72-2,155.68

Finding the Fourth Proportional to 2,418.12, 3,339.72 and 2,155.68

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Solution

The fourth proportional to 2,418.12, 3,339.72 and 2,155.68 is: 2,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.12 : 3,339.72 = 2,155.68 : x
  2. Step 2: Convert to fraction form
    2,418.12/3,339.72 = 2,155.68/x
  3. Step 3: Cross multiply
    2,418.12x = 3,339.72 × 2,155.68
  4. Step 4: Simplify right side
    2,418.12x = 7,199,367.61
  5. Step 5: Solve for x
    x = 7,199,367.61/2,418.12
  6. Step 6: Final answer
    x = 2,977.26

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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.