Home / 7,782.38-11,673.57-2,521.80

Finding the Fourth Proportional to 7,782.38, 11,673.57 and 2,521.80

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Solution

The fourth proportional to 7,782.38, 11,673.57 and 2,521.80 is: 3,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782.38 : 11,673.57 = 2,521.80 : x
  2. Step 2: Convert to fraction form
    7,782.38/11,673.57 = 2,521.80/x
  3. Step 3: Cross multiply
    7,782.38x = 11,673.57 × 2,521.80
  4. Step 4: Simplify right side
    7,782.38x = 29,438,408.83
  5. Step 5: Solve for x
    x = 29,438,408.83/7,782.38
  6. Step 6: Final answer
    x = 3,782.70

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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.