Home / 8,989.20-13,476.60-3,790.80

Finding the Fourth Proportional to 8,989.20, 13,476.60 and 3,790.80

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Solution

The fourth proportional to 8,989.20, 13,476.60 and 3,790.80 is: 5,683.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.20 : 13,476.60 = 3,790.80 : x
  2. Step 2: Convert to fraction form
    8,989.20/13,476.60 = 3,790.80/x
  3. Step 3: Cross multiply
    8,989.20x = 13,476.60 × 3,790.80
  4. Step 4: Simplify right side
    8,989.20x = 51,087,095.28
  5. Step 5: Solve for x
    x = 51,087,095.28/8,989.20
  6. Step 6: Final answer
    x = 5,683.16

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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.