Home / 9,158.23-12,638.28-5,179.33

Finding the Fourth Proportional to 9,158.23, 12,638.28 and 5,179.33

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Solution

The fourth proportional to 9,158.23, 12,638.28 and 5,179.33 is: 7,147.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.23 : 12,638.28 = 5,179.33 : x
  2. Step 2: Convert to fraction form
    9,158.23/12,638.28 = 5,179.33/x
  3. Step 3: Cross multiply
    9,158.23x = 12,638.28 × 5,179.33
  4. Step 4: Simplify right side
    9,158.23x = 65,457,822.75
  5. Step 5: Solve for x
    x = 65,457,822.75/9,158.23
  6. Step 6: Final answer
    x = 7,147.43

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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.