Home / 1,920.29-2,650.37-1,080.99

Finding the Fourth Proportional to 1,920.29, 2,650.37 and 1,080.99

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Solution

The fourth proportional to 1,920.29, 2,650.37 and 1,080.99 is: 1,491.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.29 : 2,650.37 = 1,080.99 : x
  2. Step 2: Convert to fraction form
    1,920.29/2,650.37 = 1,080.99/x
  3. Step 3: Cross multiply
    1,920.29x = 2,650.37 × 1,080.99
  4. Step 4: Simplify right side
    1,920.29x = 2,865,018.06
  5. Step 5: Solve for x
    x = 2,865,018.06/1,920.29
  6. Step 6: Final answer
    x = 1,491.98

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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.