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Finding the Fourth Proportional to 3,358.89, 5,038.30 and 1,306.89

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Solution

The fourth proportional to 3,358.89, 5,038.30 and 1,306.89 is: 1,960.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,358.89 : 5,038.30 = 1,306.89 : x
  2. Step 2: Convert to fraction form
    3,358.89/5,038.30 = 1,306.89/x
  3. Step 3: Cross multiply
    3,358.89x = 5,038.30 × 1,306.89
  4. Step 4: Simplify right side
    3,358.89x = 6,584,503.89
  5. Step 5: Solve for x
    x = 6,584,503.89/3,358.89
  6. Step 6: Final answer
    x = 1,960.32

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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.