Home / 1,920.15-2,649.74-1,174.14

Finding the Fourth Proportional to 1,920.15, 2,649.74 and 1,174.14

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Solution

The fourth proportional to 1,920.15, 2,649.74 and 1,174.14 is: 1,620.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.15 : 2,649.74 = 1,174.14 : x
  2. Step 2: Convert to fraction form
    1,920.15/2,649.74 = 1,174.14/x
  3. Step 3: Cross multiply
    1,920.15x = 2,649.74 × 1,174.14
  4. Step 4: Simplify right side
    1,920.15x = 3,111,159.85
  5. Step 5: Solve for x
    x = 3,111,159.85/1,920.15
  6. Step 6: Final answer
    x = 1,620.27

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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.