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Finding the Fourth Proportional to 2,576, 3,554.80 and 1,397.04

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Solution

The fourth proportional to 2,576, 3,554.80 and 1,397.04 is: 1,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576 : 3,554.80 = 1,397.04 : x
  2. Step 2: Convert to fraction form
    2,576/3,554.80 = 1,397.04/x
  3. Step 3: Cross multiply
    2,576x = 3,554.80 × 1,397.04
  4. Step 4: Simplify right side
    2,576x = 4,966,197.79
  5. Step 5: Solve for x
    x = 4,966,197.79/2,576
  6. Step 6: Final answer
    x = 1,927.87

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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.