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Finding the Fourth Proportional to 7,862.04, 11,778.41 and 3,908.80

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Solution

The fourth proportional to 7,862.04, 11,778.41 and 3,908.80 is: 5,855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,862.04 : 11,778.41 = 3,908.80 : x
  2. Step 2: Convert to fraction form
    7,862.04/11,778.41 = 3,908.80/x
  3. Step 3: Cross multiply
    7,862.04x = 11,778.41 × 3,908.80
  4. Step 4: Simplify right side
    7,862.04x = 46,039,473.50
  5. Step 5: Solve for x
    x = 46,039,473.50/7,862.04
  6. Step 6: Final answer
    x = 5,855.92

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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.