Home / 1,919.76-2,649.48-1,173.84

Finding the Fourth Proportional to 1,919.76, 2,649.48 and 1,173.84

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Solution

The fourth proportional to 1,919.76, 2,649.48 and 1,173.84 is: 1,620.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.76 : 2,649.48 = 1,173.84 : x
  2. Step 2: Convert to fraction form
    1,919.76/2,649.48 = 1,173.84/x
  3. Step 3: Cross multiply
    1,919.76x = 2,649.48 × 1,173.84
  4. Step 4: Simplify right side
    1,919.76x = 3,110,065.60
  5. Step 5: Solve for x
    x = 3,110,065.60/1,919.76
  6. Step 6: Final answer
    x = 1,620.03

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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.