Home / 1,920.03-2,880.86-1,141.53

Finding the Fourth Proportional to 1,920.03, 2,880.86 and 1,141.53

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Solution

The fourth proportional to 1,920.03, 2,880.86 and 1,141.53 is: 1,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.03 : 2,880.86 = 1,141.53 : x
  2. Step 2: Convert to fraction form
    1,920.03/2,880.86 = 1,141.53/x
  3. Step 3: Cross multiply
    1,920.03x = 2,880.86 × 1,141.53
  4. Step 4: Simplify right side
    1,920.03x = 3,288,588.12
  5. Step 5: Solve for x
    x = 3,288,588.12/1,920.03
  6. Step 6: Final answer
    x = 1,712.78

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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.