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Finding the Fourth Proportional to 5,291.36, 7,922.34 and 2,681.48

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Solution

The fourth proportional to 5,291.36, 7,922.34 and 2,681.48 is: 4,014.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.36 : 7,922.34 = 2,681.48 : x
  2. Step 2: Convert to fraction form
    5,291.36/7,922.34 = 2,681.48/x
  3. Step 3: Cross multiply
    5,291.36x = 7,922.34 × 2,681.48
  4. Step 4: Simplify right side
    5,291.36x = 21,243,596.26
  5. Step 5: Solve for x
    x = 21,243,596.26/5,291.36
  6. Step 6: Final answer
    x = 4,014.77

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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.