Home / 9,100.90-12,558.36-5,121.64

Finding the Fourth Proportional to 9,100.90, 12,558.36 and 5,121.64

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Solution

The fourth proportional to 9,100.90, 12,558.36 and 5,121.64 is: 7,067.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,100.90 : 12,558.36 = 5,121.64 : x
  2. Step 2: Convert to fraction form
    9,100.90/12,558.36 = 5,121.64/x
  3. Step 3: Cross multiply
    9,100.90x = 12,558.36 × 5,121.64
  4. Step 4: Simplify right side
    9,100.90x = 64,319,398.91
  5. Step 5: Solve for x
    x = 64,319,398.91/9,100.90
  6. Step 6: Final answer
    x = 7,067.37

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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.