Home / 3,905.06-5,391.40-2,415.02

Finding the Fourth Proportional to 3,905.06, 5,391.40 and 2,415.02

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Solution

The fourth proportional to 3,905.06, 5,391.40 and 2,415.02 is: 3,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.06 : 5,391.40 = 2,415.02 : x
  2. Step 2: Convert to fraction form
    3,905.06/5,391.40 = 2,415.02/x
  3. Step 3: Cross multiply
    3,905.06x = 5,391.40 × 2,415.02
  4. Step 4: Simplify right side
    3,905.06x = 13,020,338.83
  5. Step 5: Solve for x
    x = 13,020,338.83/3,905.06
  6. Step 6: Final answer
    x = 3,334.22

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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.