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Finding the Fourth Proportional to 2,653.03, 3,978.16 and 1,190.92

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Solution

The fourth proportional to 2,653.03, 3,978.16 and 1,190.92 is: 1,785.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.03 : 3,978.16 = 1,190.92 : x
  2. Step 2: Convert to fraction form
    2,653.03/3,978.16 = 1,190.92/x
  3. Step 3: Cross multiply
    2,653.03x = 3,978.16 × 1,190.92
  4. Step 4: Simplify right side
    2,653.03x = 4,737,670.31
  5. Step 5: Solve for x
    x = 4,737,670.31/2,653.03
  6. Step 6: Final answer
    x = 1,785.76

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1.5x scale

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.