Home / 5,367.55-7,407.09-3,129.28

Finding the Fourth Proportional to 5,367.55, 7,407.09 and 3,129.28

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Solution

The fourth proportional to 5,367.55, 7,407.09 and 3,129.28 is: 4,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,367.55 : 7,407.09 = 3,129.28 : x
  2. Step 2: Convert to fraction form
    5,367.55/7,407.09 = 3,129.28/x
  3. Step 3: Cross multiply
    5,367.55x = 7,407.09 × 3,129.28
  4. Step 4: Simplify right side
    5,367.55x = 23,178,846.20
  5. Step 5: Solve for x
    x = 23,178,846.20/5,367.55
  6. Step 6: Final answer
    x = 4,318.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.