Home / 1,963.90-2,710.31-1,217.89

Finding the Fourth Proportional to 1,963.90, 2,710.31 and 1,217.89

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Solution

The fourth proportional to 1,963.90, 2,710.31 and 1,217.89 is: 1,680.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.90 : 2,710.31 = 1,217.89 : x
  2. Step 2: Convert to fraction form
    1,963.90/2,710.31 = 1,217.89/x
  3. Step 3: Cross multiply
    1,963.90x = 2,710.31 × 1,217.89
  4. Step 4: Simplify right side
    1,963.90x = 3,300,848.35
  5. Step 5: Solve for x
    x = 3,300,848.35/1,963.90
  6. Step 6: Final answer
    x = 1,680.77

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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.