Home / 7,818.87-10,786.86-4,629.80

Finding the Fourth Proportional to 7,818.87, 10,786.86 and 4,629.80

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Solution

The fourth proportional to 7,818.87, 10,786.86 and 4,629.80 is: 6,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.87 : 10,786.86 = 4,629.80 : x
  2. Step 2: Convert to fraction form
    7,818.87/10,786.86 = 4,629.80/x
  3. Step 3: Cross multiply
    7,818.87x = 10,786.86 × 4,629.80
  4. Step 4: Simplify right side
    7,818.87x = 49,941,004.43
  5. Step 5: Solve for x
    x = 49,941,004.43/7,818.87
  6. Step 6: Final answer
    x = 6,387.24

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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.