Home / 8,683.08-11,982.72-6,690

Finding the Fourth Proportional to 8,683.08, 11,982.72 and 6,690

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Solution

The fourth proportional to 8,683.08, 11,982.72 and 6,690 is: 9,232.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.08 : 11,982.72 = 6,690 : x
  2. Step 2: Convert to fraction form
    8,683.08/11,982.72 = 6,690/x
  3. Step 3: Cross multiply
    8,683.08x = 11,982.72 × 6,690
  4. Step 4: Simplify right side
    8,683.08x = 80,164,396.80
  5. Step 5: Solve for x
    x = 80,164,396.80/8,683.08
  6. Step 6: Final answer
    x = 9,232.25

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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.