Home / 1,780.36-2,670.54-1,133.80

Finding the Fourth Proportional to 1,780.36, 2,670.54 and 1,133.80

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Solution

The fourth proportional to 1,780.36, 2,670.54 and 1,133.80 is: 1,700.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.36 : 2,670.54 = 1,133.80 : x
  2. Step 2: Convert to fraction form
    1,780.36/2,670.54 = 1,133.80/x
  3. Step 3: Cross multiply
    1,780.36x = 2,670.54 × 1,133.80
  4. Step 4: Simplify right side
    1,780.36x = 3,027,858.25
  5. Step 5: Solve for x
    x = 3,027,858.25/1,780.36
  6. Step 6: Final answer
    x = 1,700.70

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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.