Home / 7,855.18-11,782.76-2,011.80

Finding the Fourth Proportional to 7,855.18, 11,782.76 and 2,011.80

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Solution

The fourth proportional to 7,855.18, 11,782.76 and 2,011.80 is: 3,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.18 : 11,782.76 = 2,011.80 : x
  2. Step 2: Convert to fraction form
    7,855.18/11,782.76 = 2,011.80/x
  3. Step 3: Cross multiply
    7,855.18x = 11,782.76 × 2,011.80
  4. Step 4: Simplify right side
    7,855.18x = 23,704,556.57
  5. Step 5: Solve for x
    x = 23,704,556.57/7,855.18
  6. Step 6: Final answer
    x = 3,017.70

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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.