Home / 2,853.37-4,280.85-979.66

Finding the Fourth Proportional to 2,853.37, 4,280.85 and 979.66

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Solution

The fourth proportional to 2,853.37, 4,280.85 and 979.66 is: 1,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.37 : 4,280.85 = 979.66 : x
  2. Step 2: Convert to fraction form
    2,853.37/4,280.85 = 979.66/x
  3. Step 3: Cross multiply
    2,853.37x = 4,280.85 × 979.66
  4. Step 4: Simplify right side
    2,853.37x = 4,193,777.51
  5. Step 5: Solve for x
    x = 4,193,777.51/2,853.37
  6. Step 6: Final answer
    x = 1,469.76

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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.