Home / 3,918.60-5,409.21-2,346.39

Finding the Fourth Proportional to 3,918.60, 5,409.21 and 2,346.39

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Solution

The fourth proportional to 3,918.60, 5,409.21 and 2,346.39 is: 3,238.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.60 : 5,409.21 = 2,346.39 : x
  2. Step 2: Convert to fraction form
    3,918.60/5,409.21 = 2,346.39/x
  3. Step 3: Cross multiply
    3,918.60x = 5,409.21 × 2,346.39
  4. Step 4: Simplify right side
    3,918.60x = 12,692,116.25
  5. Step 5: Solve for x
    x = 12,692,116.25/3,918.60
  6. Step 6: Final answer
    x = 3,238.94

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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.