Home / 4,312.44-6,469.61-1,390.70

Finding the Fourth Proportional to 4,312.44, 6,469.61 and 1,390.70

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Solution

The fourth proportional to 4,312.44, 6,469.61 and 1,390.70 is: 2,086.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312.44 : 6,469.61 = 1,390.70 : x
  2. Step 2: Convert to fraction form
    4,312.44/6,469.61 = 1,390.70/x
  3. Step 3: Cross multiply
    4,312.44x = 6,469.61 × 1,390.70
  4. Step 4: Simplify right side
    4,312.44x = 8,997,295.85
  5. Step 5: Solve for x
    x = 8,997,295.85/4,312.44
  6. Step 6: Final answer
    x = 2,086.36

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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.