Home / 1,919.79-2,649.56-1,480.16

Finding the Fourth Proportional to 1,919.79, 2,649.56 and 1,480.16

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Solution

The fourth proportional to 1,919.79, 2,649.56 and 1,480.16 is: 2,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.79 : 2,649.56 = 1,480.16 : x
  2. Step 2: Convert to fraction form
    1,919.79/2,649.56 = 1,480.16/x
  3. Step 3: Cross multiply
    1,919.79x = 2,649.56 × 1,480.16
  4. Step 4: Simplify right side
    1,919.79x = 3,921,752.08
  5. Step 5: Solve for x
    x = 3,921,752.08/1,919.79
  6. Step 6: Final answer
    x = 2,042.80

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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.