Home / 3,971.79-5,481-2,203.36

Finding the Fourth Proportional to 3,971.79, 5,481 and 2,203.36

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Solution

The fourth proportional to 3,971.79, 5,481 and 2,203.36 is: 3,040.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.79 : 5,481 = 2,203.36 : x
  2. Step 2: Convert to fraction form
    3,971.79/5,481 = 2,203.36/x
  3. Step 3: Cross multiply
    3,971.79x = 5,481 × 2,203.36
  4. Step 4: Simplify right side
    3,971.79x = 12,076,602.46
  5. Step 5: Solve for x
    x = 12,076,602.46/3,971.79
  6. Step 6: Final answer
    x = 3,040.59

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1.5x scale

Why These Related Problems?

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