Home / 1,921.07-2,876.99-1,302.90

Finding the Fourth Proportional to 1,921.07, 2,876.99 and 1,302.90

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Solution

The fourth proportional to 1,921.07, 2,876.99 and 1,302.90 is: 1,951.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.07 : 2,876.99 = 1,302.90 : x
  2. Step 2: Convert to fraction form
    1,921.07/2,876.99 = 1,302.90/x
  3. Step 3: Cross multiply
    1,921.07x = 2,876.99 × 1,302.90
  4. Step 4: Simplify right side
    1,921.07x = 3,748,439.43
  5. Step 5: Solve for x
    x = 3,748,439.43/1,921.07
  6. Step 6: Final answer
    x = 1,951.22

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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.