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Finding the Fourth Proportional to 1,915.08, 2,644.02 and 1,325.40

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Solution

The fourth proportional to 1,915.08, 2,644.02 and 1,325.40 is: 1,829.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.08 : 2,644.02 = 1,325.40 : x
  2. Step 2: Convert to fraction form
    1,915.08/2,644.02 = 1,325.40/x
  3. Step 3: Cross multiply
    1,915.08x = 2,644.02 × 1,325.40
  4. Step 4: Simplify right side
    1,915.08x = 3,504,384.11
  5. Step 5: Solve for x
    x = 3,504,384.11/1,915.08
  6. Step 6: Final answer
    x = 1,829.89

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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.