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Finding the Fourth Proportional to 5,653.80, 8,480.70 and 1,954.80

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Solution

The fourth proportional to 5,653.80, 8,480.70 and 1,954.80 is: 2,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,653.80 : 8,480.70 = 1,954.80 : x
  2. Step 2: Convert to fraction form
    5,653.80/8,480.70 = 1,954.80/x
  3. Step 3: Cross multiply
    5,653.80x = 8,480.70 × 1,954.80
  4. Step 4: Simplify right side
    5,653.80x = 16,578,072.36
  5. Step 5: Solve for x
    x = 16,578,072.36/5,653.80
  6. Step 6: Final answer
    x = 2,932.20

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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.