Home / 1,285.09-1,771.77-1,048.80

Finding the Fourth Proportional to 1,285.09, 1,771.77 and 1,048.80

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Solution

The fourth proportional to 1,285.09, 1,771.77 and 1,048.80 is: 1,446.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.09 : 1,771.77 = 1,048.80 : x
  2. Step 2: Convert to fraction form
    1,285.09/1,771.77 = 1,048.80/x
  3. Step 3: Cross multiply
    1,285.09x = 1,771.77 × 1,048.80
  4. Step 4: Simplify right side
    1,285.09x = 1,858,242.95
  5. Step 5: Solve for x
    x = 1,858,242.95/1,285.09
  6. Step 6: Final answer
    x = 1,446.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.