Home / 1,219.89-1,821.56-1,070.54

Finding the Fourth Proportional to 1,219.89, 1,821.56 and 1,070.54

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Solution

The fourth proportional to 1,219.89, 1,821.56 and 1,070.54 is: 1,598.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.89 : 1,821.56 = 1,070.54 : x
  2. Step 2: Convert to fraction form
    1,219.89/1,821.56 = 1,070.54/x
  3. Step 3: Cross multiply
    1,219.89x = 1,821.56 × 1,070.54
  4. Step 4: Simplify right side
    1,219.89x = 1,950,052.84
  5. Step 5: Solve for x
    x = 1,950,052.84/1,219.89
  6. Step 6: Final answer
    x = 1,598.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.