Home / 5,516.40-8,272.40-1,817.60

Finding the Fourth Proportional to 5,516.40, 8,272.40 and 1,817.60

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Solution

The fourth proportional to 5,516.40, 8,272.40 and 1,817.60 is: 2,725.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516.40 : 8,272.40 = 1,817.60 : x
  2. Step 2: Convert to fraction form
    5,516.40/8,272.40 = 1,817.60/x
  3. Step 3: Cross multiply
    5,516.40x = 8,272.40 × 1,817.60
  4. Step 4: Simplify right side
    5,516.40x = 15,035,914.24
  5. Step 5: Solve for x
    x = 15,035,914.24/5,516.40
  6. Step 6: Final answer
    x = 2,725.68

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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.