Home / 2,879.40-4,319.37-1,235.64

Finding the Fourth Proportional to 2,879.40, 4,319.37 and 1,235.64

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Solution

The fourth proportional to 2,879.40, 4,319.37 and 1,235.64 is: 1,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.40 : 4,319.37 = 1,235.64 : x
  2. Step 2: Convert to fraction form
    2,879.40/4,319.37 = 1,235.64/x
  3. Step 3: Cross multiply
    2,879.40x = 4,319.37 × 1,235.64
  4. Step 4: Simplify right side
    2,879.40x = 5,337,186.35
  5. Step 5: Solve for x
    x = 5,337,186.35/2,879.40
  6. Step 6: Final answer
    x = 1,853.58

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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.