Home / 5,128.60-7,079.83-3,003.84

Finding the Fourth Proportional to 5,128.60, 7,079.83 and 3,003.84

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Solution

The fourth proportional to 5,128.60, 7,079.83 and 3,003.84 is: 4,146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.60 : 7,079.83 = 3,003.84 : x
  2. Step 2: Convert to fraction form
    5,128.60/7,079.83 = 3,003.84/x
  3. Step 3: Cross multiply
    5,128.60x = 7,079.83 × 3,003.84
  4. Step 4: Simplify right side
    5,128.60x = 21,266,670.11
  5. Step 5: Solve for x
    x = 21,266,670.11/5,128.60
  6. Step 6: Final answer
    x = 4,146.68

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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.