Home / 1,555.20-2,144.07-1,076.69

Finding the Fourth Proportional to 1,555.20, 2,144.07 and 1,076.69

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Solution

The fourth proportional to 1,555.20, 2,144.07 and 1,076.69 is: 1,484.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.20 : 2,144.07 = 1,076.69 : x
  2. Step 2: Convert to fraction form
    1,555.20/2,144.07 = 1,076.69/x
  3. Step 3: Cross multiply
    1,555.20x = 2,144.07 × 1,076.69
  4. Step 4: Simplify right side
    1,555.20x = 2,308,504.09
  5. Step 5: Solve for x
    x = 2,308,504.09/1,555.20
  6. Step 6: Final answer
    x = 1,484.38

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Double scale
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1.5x scale

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.