Home / 1,736.89-2,603.50-640.55

Finding the Fourth Proportional to 1,736.89, 2,603.50 and 640.55

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Solution

The fourth proportional to 1,736.89, 2,603.50 and 640.55 is: 960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.89 : 2,603.50 = 640.55 : x
  2. Step 2: Convert to fraction form
    1,736.89/2,603.50 = 640.55/x
  3. Step 3: Cross multiply
    1,736.89x = 2,603.50 × 640.55
  4. Step 4: Simplify right side
    1,736.89x = 1,667,671.93
  5. Step 5: Solve for x
    x = 1,667,671.93/1,736.89
  6. Step 6: Final answer
    x = 960.15

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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.