Home / 5,450.37-7,521.80-4,121.79

Finding the Fourth Proportional to 5,450.37, 7,521.80 and 4,121.79

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Solution

The fourth proportional to 5,450.37, 7,521.80 and 4,121.79 is: 5,688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,450.37 : 7,521.80 = 4,121.79 : x
  2. Step 2: Convert to fraction form
    5,450.37/7,521.80 = 4,121.79/x
  3. Step 3: Cross multiply
    5,450.37x = 7,521.80 × 4,121.79
  4. Step 4: Simplify right side
    5,450.37x = 31,003,280.02
  5. Step 5: Solve for x
    x = 31,003,280.02/5,450.37
  6. Step 6: Final answer
    x = 5,688.29

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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.