Home / 5,384.36-7,421.28-4,107.80

Finding the Fourth Proportional to 5,384.36, 7,421.28 and 4,107.80

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Solution

The fourth proportional to 5,384.36, 7,421.28 and 4,107.80 is: 5,661.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.36 : 7,421.28 = 4,107.80 : x
  2. Step 2: Convert to fraction form
    5,384.36/7,421.28 = 4,107.80/x
  3. Step 3: Cross multiply
    5,384.36x = 7,421.28 × 4,107.80
  4. Step 4: Simplify right side
    5,384.36x = 30,485,133.98
  5. Step 5: Solve for x
    x = 30,485,133.98/5,384.36
  6. Step 6: Final answer
    x = 5,661.79

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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.