Home / 1,919.65-2,649.05-1,173.64

Finding the Fourth Proportional to 1,919.65, 2,649.05 and 1,173.64

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Solution

The fourth proportional to 1,919.65, 2,649.05 and 1,173.64 is: 1,619.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.65 : 2,649.05 = 1,173.64 : x
  2. Step 2: Convert to fraction form
    1,919.65/2,649.05 = 1,173.64/x
  3. Step 3: Cross multiply
    1,919.65x = 2,649.05 × 1,173.64
  4. Step 4: Simplify right side
    1,919.65x = 3,109,018.55
  5. Step 5: Solve for x
    x = 3,109,018.55/1,919.65
  6. Step 6: Final answer
    x = 1,619.58

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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.