Home / 2,840.32-4,260.48-1,379.68

Finding the Fourth Proportional to 2,840.32, 4,260.48 and 1,379.68

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Solution

The fourth proportional to 2,840.32, 4,260.48 and 1,379.68 is: 2,069.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.32 : 4,260.48 = 1,379.68 : x
  2. Step 2: Convert to fraction form
    2,840.32/4,260.48 = 1,379.68/x
  3. Step 3: Cross multiply
    2,840.32x = 4,260.48 × 1,379.68
  4. Step 4: Simplify right side
    2,840.32x = 5,878,099.05
  5. Step 5: Solve for x
    x = 5,878,099.05/2,840.32
  6. Step 6: Final answer
    x = 2,069.52

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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.