Home / 4,928.70-7,390.26-1,640.02

Finding the Fourth Proportional to 4,928.70, 7,390.26 and 1,640.02

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Solution

The fourth proportional to 4,928.70, 7,390.26 and 1,640.02 is: 2,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.70 : 7,390.26 = 1,640.02 : x
  2. Step 2: Convert to fraction form
    4,928.70/7,390.26 = 1,640.02/x
  3. Step 3: Cross multiply
    4,928.70x = 7,390.26 × 1,640.02
  4. Step 4: Simplify right side
    4,928.70x = 12,120,174.21
  5. Step 5: Solve for x
    x = 12,120,174.21/4,928.70
  6. Step 6: Final answer
    x = 2,459.10

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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.