Home / 7,817.28-11,726.40-2,626.80

Finding the Fourth Proportional to 7,817.28, 11,726.40 and 2,626.80

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Solution

The fourth proportional to 7,817.28, 11,726.40 and 2,626.80 is: 3,940.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.28 : 11,726.40 = 2,626.80 : x
  2. Step 2: Convert to fraction form
    7,817.28/11,726.40 = 2,626.80/x
  3. Step 3: Cross multiply
    7,817.28x = 11,726.40 × 2,626.80
  4. Step 4: Simplify right side
    7,817.28x = 30,802,907.52
  5. Step 5: Solve for x
    x = 30,802,907.52/7,817.28
  6. Step 6: Final answer
    x = 3,940.36

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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.