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Finding the Fourth Proportional to 2,607.84, 3,910.08 and 1,219.32

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Solution

The fourth proportional to 2,607.84, 3,910.08 and 1,219.32 is: 1,828.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,607.84 : 3,910.08 = 1,219.32 : x
  2. Step 2: Convert to fraction form
    2,607.84/3,910.08 = 1,219.32/x
  3. Step 3: Cross multiply
    2,607.84x = 3,910.08 × 1,219.32
  4. Step 4: Simplify right side
    2,607.84x = 4,767,638.75
  5. Step 5: Solve for x
    x = 4,767,638.75/2,607.84
  6. Step 6: Final answer
    x = 1,828.19

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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.