Home / 3,218.31-4,827.75-1,270.05

Finding the Fourth Proportional to 3,218.31, 4,827.75 and 1,270.05

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Solution

The fourth proportional to 3,218.31, 4,827.75 and 1,270.05 is: 1,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.31 : 4,827.75 = 1,270.05 : x
  2. Step 2: Convert to fraction form
    3,218.31/4,827.75 = 1,270.05/x
  3. Step 3: Cross multiply
    3,218.31x = 4,827.75 × 1,270.05
  4. Step 4: Simplify right side
    3,218.31x = 6,131,483.89
  5. Step 5: Solve for x
    x = 6,131,483.89/3,218.31
  6. Step 6: Final answer
    x = 1,905.19

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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.