Home / 3,240.90-4,861.56-1,292.85

Finding the Fourth Proportional to 3,240.90, 4,861.56 and 1,292.85

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Solution

The fourth proportional to 3,240.90, 4,861.56 and 1,292.85 is: 1,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.90 : 4,861.56 = 1,292.85 : x
  2. Step 2: Convert to fraction form
    3,240.90/4,861.56 = 1,292.85/x
  3. Step 3: Cross multiply
    3,240.90x = 4,861.56 × 1,292.85
  4. Step 4: Simplify right side
    3,240.90x = 6,285,267.85
  5. Step 5: Solve for x
    x = 6,285,267.85/3,240.90
  6. Step 6: Final answer
    x = 1,939.36

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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.