Home / 2,928.35-4,392.88-1,284.71

Finding the Fourth Proportional to 2,928.35, 4,392.88 and 1,284.71

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Solution

The fourth proportional to 2,928.35, 4,392.88 and 1,284.71 is: 1,927.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.35 : 4,392.88 = 1,284.71 : x
  2. Step 2: Convert to fraction form
    2,928.35/4,392.88 = 1,284.71/x
  3. Step 3: Cross multiply
    2,928.35x = 4,392.88 × 1,284.71
  4. Step 4: Simplify right side
    2,928.35x = 5,643,583.63
  5. Step 5: Solve for x
    x = 5,643,583.63/2,928.35
  6. Step 6: Final answer
    x = 1,927.22

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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.