Home / 7,789.36-11,683.56-3,172.24

Finding the Fourth Proportional to 7,789.36, 11,683.56 and 3,172.24

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Solution

The fourth proportional to 7,789.36, 11,683.56 and 3,172.24 is: 4,758.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.36 : 11,683.56 = 3,172.24 : x
  2. Step 2: Convert to fraction form
    7,789.36/11,683.56 = 3,172.24/x
  3. Step 3: Cross multiply
    7,789.36x = 11,683.56 × 3,172.24
  4. Step 4: Simplify right side
    7,789.36x = 37,063,056.37
  5. Step 5: Solve for x
    x = 37,063,056.37/7,789.36
  6. Step 6: Final answer
    x = 4,758.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.