Home / 1,456.70-2,190.45-1,219.10

Finding the Fourth Proportional to 1,456.70, 2,190.45 and 1,219.10

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Solution

The fourth proportional to 1,456.70, 2,190.45 and 1,219.10 is: 1,833.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.70 : 2,190.45 = 1,219.10 : x
  2. Step 2: Convert to fraction form
    1,456.70/2,190.45 = 1,219.10/x
  3. Step 3: Cross multiply
    1,456.70x = 2,190.45 × 1,219.10
  4. Step 4: Simplify right side
    1,456.70x = 2,670,377.60
  5. Step 5: Solve for x
    x = 2,670,377.60/1,456.70
  6. Step 6: Final answer
    x = 1,833.17

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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.