Home / 9,786.20-13,510.14-5,811.80

Finding the Fourth Proportional to 9,786.20, 13,510.14 and 5,811.80

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Solution

The fourth proportional to 9,786.20, 13,510.14 and 5,811.80 is: 8,023.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,786.20 : 13,510.14 = 5,811.80 : x
  2. Step 2: Convert to fraction form
    9,786.20/13,510.14 = 5,811.80/x
  3. Step 3: Cross multiply
    9,786.20x = 13,510.14 × 5,811.80
  4. Step 4: Simplify right side
    9,786.20x = 78,518,231.65
  5. Step 5: Solve for x
    x = 78,518,231.65/9,786.20
  6. Step 6: Final answer
    x = 8,023.36

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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.