Home / 1,928.51-2,661.40-1,182.88

Finding the Fourth Proportional to 1,928.51, 2,661.40 and 1,182.88

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Solution

The fourth proportional to 1,928.51, 2,661.40 and 1,182.88 is: 1,632.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.51 : 2,661.40 = 1,182.88 : x
  2. Step 2: Convert to fraction form
    1,928.51/2,661.40 = 1,182.88/x
  3. Step 3: Cross multiply
    1,928.51x = 2,661.40 × 1,182.88
  4. Step 4: Simplify right side
    1,928.51x = 3,148,125.80
  5. Step 5: Solve for x
    x = 3,148,125.80/1,928.51
  6. Step 6: Final answer
    x = 1,632.41

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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.