Home / 2,905.37-4,357.29-1,980.75

Finding the Fourth Proportional to 2,905.37, 4,357.29 and 1,980.75

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Solution

The fourth proportional to 2,905.37, 4,357.29 and 1,980.75 is: 2,970.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.37 : 4,357.29 = 1,980.75 : x
  2. Step 2: Convert to fraction form
    2,905.37/4,357.29 = 1,980.75/x
  3. Step 3: Cross multiply
    2,905.37x = 4,357.29 × 1,980.75
  4. Step 4: Simplify right side
    2,905.37x = 8,630,725.94
  5. Step 5: Solve for x
    x = 8,630,725.94/2,905.37
  6. Step 6: Final answer
    x = 2,970.61

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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.