Home / 1,930.23-2,895.39-1,280.88

Finding the Fourth Proportional to 1,930.23, 2,895.39 and 1,280.88

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Solution

The fourth proportional to 1,930.23, 2,895.39 and 1,280.88 is: 1,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.23 : 2,895.39 = 1,280.88 : x
  2. Step 2: Convert to fraction form
    1,930.23/2,895.39 = 1,280.88/x
  3. Step 3: Cross multiply
    1,930.23x = 2,895.39 × 1,280.88
  4. Step 4: Simplify right side
    1,930.23x = 3,708,647.14
  5. Step 5: Solve for x
    x = 3,708,647.14/1,930.23
  6. Step 6: Final answer
    x = 1,921.35

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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.