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Finding the Fourth Proportional to 1,768.92, 2,653.04 and 1,681.11

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Solution

The fourth proportional to 1,768.92, 2,653.04 and 1,681.11 is: 2,521.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.92 : 2,653.04 = 1,681.11 : x
  2. Step 2: Convert to fraction form
    1,768.92/2,653.04 = 1,681.11/x
  3. Step 3: Cross multiply
    1,768.92x = 2,653.04 × 1,681.11
  4. Step 4: Simplify right side
    1,768.92x = 4,460,050.30
  5. Step 5: Solve for x
    x = 4,460,050.30/1,768.92
  6. Step 6: Final answer
    x = 2,521.34

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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.