Home / 1,929.07-2,661.87-1,089.64

Finding the Fourth Proportional to 1,929.07, 2,661.87 and 1,089.64

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Solution

The fourth proportional to 1,929.07, 2,661.87 and 1,089.64 is: 1,503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.07 : 2,661.87 = 1,089.64 : x
  2. Step 2: Convert to fraction form
    1,929.07/2,661.87 = 1,089.64/x
  3. Step 3: Cross multiply
    1,929.07x = 2,661.87 × 1,089.64
  4. Step 4: Simplify right side
    1,929.07x = 2,900,480.03
  5. Step 5: Solve for x
    x = 2,900,480.03/1,929.07
  6. Step 6: Final answer
    x = 1,503.56

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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.