Home / 8,128.44-11,216.40-4,543.20

Finding the Fourth Proportional to 8,128.44, 11,216.40 and 4,543.20

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Solution

The fourth proportional to 8,128.44, 11,216.40 and 4,543.20 is: 6,269.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.44 : 11,216.40 = 4,543.20 : x
  2. Step 2: Convert to fraction form
    8,128.44/11,216.40 = 4,543.20/x
  3. Step 3: Cross multiply
    8,128.44x = 11,216.40 × 4,543.20
  4. Step 4: Simplify right side
    8,128.44x = 50,958,348.48
  5. Step 5: Solve for x
    x = 50,958,348.48/8,128.44
  6. Step 6: Final answer
    x = 6,269.14

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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.