Home / 6,780.45-9,357.21-4,127.79

Finding the Fourth Proportional to 6,780.45, 9,357.21 and 4,127.79

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Solution

The fourth proportional to 6,780.45, 9,357.21 and 4,127.79 is: 5,696.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.45 : 9,357.21 = 4,127.79 : x
  2. Step 2: Convert to fraction form
    6,780.45/9,357.21 = 4,127.79/x
  3. Step 3: Cross multiply
    6,780.45x = 9,357.21 × 4,127.79
  4. Step 4: Simplify right side
    6,780.45x = 38,624,597.87
  5. Step 5: Solve for x
    x = 38,624,597.87/6,780.45
  6. Step 6: Final answer
    x = 5,696.47

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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.