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Finding the Fourth Proportional to 5,188.77, 7,783.70 and 1,726.29

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Solution

The fourth proportional to 5,188.77, 7,783.70 and 1,726.29 is: 2,589.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.77 : 7,783.70 = 1,726.29 : x
  2. Step 2: Convert to fraction form
    5,188.77/7,783.70 = 1,726.29/x
  3. Step 3: Cross multiply
    5,188.77x = 7,783.70 × 1,726.29
  4. Step 4: Simplify right side
    5,188.77x = 13,436,914.84
  5. Step 5: Solve for x
    x = 13,436,914.84/5,188.77
  6. Step 6: Final answer
    x = 2,589.61

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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.