Home / 5,520.98-7,619.49-4,121.30

Finding the Fourth Proportional to 5,520.98, 7,619.49 and 4,121.30

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Solution

The fourth proportional to 5,520.98, 7,619.49 and 4,121.30 is: 5,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.98 : 7,619.49 = 4,121.30 : x
  2. Step 2: Convert to fraction form
    5,520.98/7,619.49 = 4,121.30/x
  3. Step 3: Cross multiply
    5,520.98x = 7,619.49 × 4,121.30
  4. Step 4: Simplify right side
    5,520.98x = 31,402,204.14
  5. Step 5: Solve for x
    x = 31,402,204.14/5,520.98
  6. Step 6: Final answer
    x = 5,687.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.