Home / 5,399.46-7,443.09-4,218.48

Finding the Fourth Proportional to 5,399.46, 7,443.09 and 4,218.48

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Solution

The fourth proportional to 5,399.46, 7,443.09 and 4,218.48 is: 5,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.46 : 7,443.09 = 4,218.48 : x
  2. Step 2: Convert to fraction form
    5,399.46/7,443.09 = 4,218.48/x
  3. Step 3: Cross multiply
    5,399.46x = 7,443.09 × 4,218.48
  4. Step 4: Simplify right side
    5,399.46x = 31,398,526.30
  5. Step 5: Solve for x
    x = 31,398,526.30/5,399.46
  6. Step 6: Final answer
    x = 5,815.12

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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.