Home / 3,903.82-5,385.76-2,487.26

Finding the Fourth Proportional to 3,903.82, 5,385.76 and 2,487.26

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Solution

The fourth proportional to 3,903.82, 5,385.76 and 2,487.26 is: 3,431.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.82 : 5,385.76 = 2,487.26 : x
  2. Step 2: Convert to fraction form
    3,903.82/5,385.76 = 2,487.26/x
  3. Step 3: Cross multiply
    3,903.82x = 5,385.76 × 2,487.26
  4. Step 4: Simplify right side
    3,903.82x = 13,395,768.33
  5. Step 5: Solve for x
    x = 13,395,768.33/3,903.82
  6. Step 6: Final answer
    x = 3,431.45

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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.