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Finding the Fourth Proportional to 5,168.94, 7,751.49 and 1,790.88

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Solution

The fourth proportional to 5,168.94, 7,751.49 and 1,790.88 is: 2,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.94 : 7,751.49 = 1,790.88 : x
  2. Step 2: Convert to fraction form
    5,168.94/7,751.49 = 1,790.88/x
  3. Step 3: Cross multiply
    5,168.94x = 7,751.49 × 1,790.88
  4. Step 4: Simplify right side
    5,168.94x = 13,881,988.41
  5. Step 5: Solve for x
    x = 13,881,988.41/5,168.94
  6. Step 6: Final answer
    x = 2,685.65

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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.