Home / 9,156.36-12,636.54-5,179.08

Finding the Fourth Proportional to 9,156.36, 12,636.54 and 5,179.08

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Solution

The fourth proportional to 9,156.36, 12,636.54 and 5,179.08 is: 7,147.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,156.36 : 12,636.54 = 5,179.08 : x
  2. Step 2: Convert to fraction form
    9,156.36/12,636.54 = 5,179.08/x
  3. Step 3: Cross multiply
    9,156.36x = 12,636.54 × 5,179.08
  4. Step 4: Simplify right side
    9,156.36x = 65,445,651.58
  5. Step 5: Solve for x
    x = 65,445,651.58/9,156.36
  6. Step 6: Final answer
    x = 7,147.56

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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.