Home / 9,361.20-12,917.70-5,169

Finding the Fourth Proportional to 9,361.20, 12,917.70 and 5,169

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Solution

The fourth proportional to 9,361.20, 12,917.70 and 5,169 is: 7,132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,361.20 : 12,917.70 = 5,169 : x
  2. Step 2: Convert to fraction form
    9,361.20/12,917.70 = 5,169/x
  3. Step 3: Cross multiply
    9,361.20x = 12,917.70 × 5,169
  4. Step 4: Simplify right side
    9,361.20x = 66,771,591.30
  5. Step 5: Solve for x
    x = 66,771,591.30/9,361.20
  6. Step 6: Final answer
    x = 7,132.80

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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.