Home / 2,603.85-3,905.78-1,305.02

Finding the Fourth Proportional to 2,603.85, 3,905.78 and 1,305.02

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Solution

The fourth proportional to 2,603.85, 3,905.78 and 1,305.02 is: 1,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.85 : 3,905.78 = 1,305.02 : x
  2. Step 2: Convert to fraction form
    2,603.85/3,905.78 = 1,305.02/x
  3. Step 3: Cross multiply
    2,603.85x = 3,905.78 × 1,305.02
  4. Step 4: Simplify right side
    2,603.85x = 5,097,094.96
  5. Step 5: Solve for x
    x = 5,097,094.96/2,603.85
  6. Step 6: Final answer
    x = 1,957.52

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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.