Home / 1,638.70-2,460.86-1,094.38

Finding the Fourth Proportional to 1,638.70, 2,460.86 and 1,094.38

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Solution

The fourth proportional to 1,638.70, 2,460.86 and 1,094.38 is: 1,643.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.70 : 2,460.86 = 1,094.38 : x
  2. Step 2: Convert to fraction form
    1,638.70/2,460.86 = 1,094.38/x
  3. Step 3: Cross multiply
    1,638.70x = 2,460.86 × 1,094.38
  4. Step 4: Simplify right side
    1,638.70x = 2,693,115.97
  5. Step 5: Solve for x
    x = 2,693,115.97/1,638.70
  6. Step 6: Final answer
    x = 1,643.45

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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.