Home / 4,380.78-6,570.46-1,260.66

Finding the Fourth Proportional to 4,380.78, 6,570.46 and 1,260.66

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Solution

The fourth proportional to 4,380.78, 6,570.46 and 1,260.66 is: 1,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,380.78 : 6,570.46 = 1,260.66 : x
  2. Step 2: Convert to fraction form
    4,380.78/6,570.46 = 1,260.66/x
  3. Step 3: Cross multiply
    4,380.78x = 6,570.46 × 1,260.66
  4. Step 4: Simplify right side
    4,380.78x = 8,283,109.80
  5. Step 5: Solve for x
    x = 8,283,109.80/4,380.78
  6. Step 6: Final answer
    x = 1,890.78

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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.