Home / 6,900.80-10,351.15-4,128.24

Finding the Fourth Proportional to 6,900.80, 10,351.15 and 4,128.24

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Solution

The fourth proportional to 6,900.80, 10,351.15 and 4,128.24 is: 6,192.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.80 : 10,351.15 = 4,128.24 : x
  2. Step 2: Convert to fraction form
    6,900.80/10,351.15 = 4,128.24/x
  3. Step 3: Cross multiply
    6,900.80x = 10,351.15 × 4,128.24
  4. Step 4: Simplify right side
    6,900.80x = 42,732,067.67
  5. Step 5: Solve for x
    x = 42,732,067.67/6,900.80
  6. Step 6: Final answer
    x = 6,192.34

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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.