Home / 2,757.90-4,134.69-1,889.58

Finding the Fourth Proportional to 2,757.90, 4,134.69 and 1,889.58

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Solution

The fourth proportional to 2,757.90, 4,134.69 and 1,889.58 is: 2,832.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.90 : 4,134.69 = 1,889.58 : x
  2. Step 2: Convert to fraction form
    2,757.90/4,134.69 = 1,889.58/x
  3. Step 3: Cross multiply
    2,757.90x = 4,134.69 × 1,889.58
  4. Step 4: Simplify right side
    2,757.90x = 7,812,827.53
  5. Step 5: Solve for x
    x = 7,812,827.53/2,757.90
  6. Step 6: Final answer
    x = 2,832.89

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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.