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Finding the Fourth Proportional to 1,928.71, 2,879.09 and 1,695.15

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Solution

The fourth proportional to 1,928.71, 2,879.09 and 1,695.15 is: 2,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.71 : 2,879.09 = 1,695.15 : x
  2. Step 2: Convert to fraction form
    1,928.71/2,879.09 = 1,695.15/x
  3. Step 3: Cross multiply
    1,928.71x = 2,879.09 × 1,695.15
  4. Step 4: Simplify right side
    1,928.71x = 4,880,504.93
  5. Step 5: Solve for x
    x = 4,880,504.93/1,928.71
  6. Step 6: Final answer
    x = 2,530.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.