Home / 8,683.10-11,987.79-5,704.13

Finding the Fourth Proportional to 8,683.10, 11,987.79 and 5,704.13

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Solution

The fourth proportional to 8,683.10, 11,987.79 and 5,704.13 is: 7,875.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.10 : 11,987.79 = 5,704.13 : x
  2. Step 2: Convert to fraction form
    8,683.10/11,987.79 = 5,704.13/x
  3. Step 3: Cross multiply
    8,683.10x = 11,987.79 × 5,704.13
  4. Step 4: Simplify right side
    8,683.10x = 68,379,912.57
  5. Step 5: Solve for x
    x = 68,379,912.57/8,683.10
  6. Step 6: Final answer
    x = 7,875.06

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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.