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Finding the Fourth Proportional to 2,459, 3,393.42 and 1,355

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Solution

The fourth proportional to 2,459, 3,393.42 and 1,355 is: 1,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,459 : 3,393.42 = 1,355 : x
  2. Step 2: Convert to fraction form
    2,459/3,393.42 = 1,355/x
  3. Step 3: Cross multiply
    2,459x = 3,393.42 × 1,355
  4. Step 4: Simplify right side
    2,459x = 4,598,084.10
  5. Step 5: Solve for x
    x = 4,598,084.10/2,459
  6. Step 6: Final answer
    x = 1,869.90

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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.