Home / 2,745.79-4,118.70-1,827.20

Finding the Fourth Proportional to 2,745.79, 4,118.70 and 1,827.20

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Solution

The fourth proportional to 2,745.79, 4,118.70 and 1,827.20 is: 2,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.79 : 4,118.70 = 1,827.20 : x
  2. Step 2: Convert to fraction form
    2,745.79/4,118.70 = 1,827.20/x
  3. Step 3: Cross multiply
    2,745.79x = 4,118.70 × 1,827.20
  4. Step 4: Simplify right side
    2,745.79x = 7,525,688.64
  5. Step 5: Solve for x
    x = 7,525,688.64/2,745.79
  6. Step 6: Final answer
    x = 2,740.81

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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.