Home / 1,898.30-2,848.89-1,280.54

Finding the Fourth Proportional to 1,898.30, 2,848.89 and 1,280.54

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Solution

The fourth proportional to 1,898.30, 2,848.89 and 1,280.54 is: 1,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.30 : 2,848.89 = 1,280.54 : x
  2. Step 2: Convert to fraction form
    1,898.30/2,848.89 = 1,280.54/x
  3. Step 3: Cross multiply
    1,898.30x = 2,848.89 × 1,280.54
  4. Step 4: Simplify right side
    1,898.30x = 3,648,117.60
  5. Step 5: Solve for x
    x = 3,648,117.60/1,898.30
  6. Step 6: Final answer
    x = 1,921.78

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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.