Home / 2,279.85-3,146.00-1,285.37

Finding the Fourth Proportional to 2,279.85, 3,146.00 and 1,285.37

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Solution

The fourth proportional to 2,279.85, 3,146.00 and 1,285.37 is: 1,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.85 : 3,146.00 = 1,285.37 : x
  2. Step 2: Convert to fraction form
    2,279.85/3,146.00 = 1,285.37/x
  3. Step 3: Cross multiply
    2,279.85x = 3,146.00 × 1,285.37
  4. Step 4: Simplify right side
    2,279.85x = 4,043,762.94
  5. Step 5: Solve for x
    x = 4,043,762.94/2,279.85
  6. Step 6: Final answer
    x = 1,773.70

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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.