Home / 9,189.03-12,683.75-5,212.79

Finding the Fourth Proportional to 9,189.03, 12,683.75 and 5,212.79

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Solution

The fourth proportional to 9,189.03, 12,683.75 and 5,212.79 is: 7,195.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.03 : 12,683.75 = 5,212.79 : x
  2. Step 2: Convert to fraction form
    9,189.03/12,683.75 = 5,212.79/x
  3. Step 3: Cross multiply
    9,189.03x = 12,683.75 × 5,212.79
  4. Step 4: Simplify right side
    9,189.03x = 66,117,661.74
  5. Step 5: Solve for x
    x = 66,117,661.74/9,189.03
  6. Step 6: Final answer
    x = 7,195.28

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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.