Home / 9,351.75-12,905.42-5,160

Finding the Fourth Proportional to 9,351.75, 12,905.42 and 5,160

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Solution

The fourth proportional to 9,351.75, 12,905.42 and 5,160 is: 7,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,351.75 : 12,905.42 = 5,160 : x
  2. Step 2: Convert to fraction form
    9,351.75/12,905.42 = 5,160/x
  3. Step 3: Cross multiply
    9,351.75x = 12,905.42 × 5,160
  4. Step 4: Simplify right side
    9,351.75x = 66,591,941.40
  5. Step 5: Solve for x
    x = 66,591,941.40/9,351.75
  6. Step 6: Final answer
    x = 7,120.80

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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.