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Finding the Fourth Proportional to 5,291.55, 7,936.71 and 1,396.26

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Solution

The fourth proportional to 5,291.55, 7,936.71 and 1,396.26 is: 2,094.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.55 : 7,936.71 = 1,396.26 : x
  2. Step 2: Convert to fraction form
    5,291.55/7,936.71 = 1,396.26/x
  3. Step 3: Cross multiply
    5,291.55x = 7,936.71 × 1,396.26
  4. Step 4: Simplify right side
    5,291.55x = 11,081,710.70
  5. Step 5: Solve for x
    x = 11,081,710.70/5,291.55
  6. Step 6: Final answer
    x = 2,094.23

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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.