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Finding the Fourth Proportional to 1,673.85, 2,510.78 and 1,308.95

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Solution

The fourth proportional to 1,673.85, 2,510.78 and 1,308.95 is: 1,963.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.85 : 2,510.78 = 1,308.95 : x
  2. Step 2: Convert to fraction form
    1,673.85/2,510.78 = 1,308.95/x
  3. Step 3: Cross multiply
    1,673.85x = 2,510.78 × 1,308.95
  4. Step 4: Simplify right side
    1,673.85x = 3,286,466.38
  5. Step 5: Solve for x
    x = 3,286,466.38/1,673.85
  6. Step 6: Final answer
    x = 1,963.42

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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.