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Finding the Fourth Proportional to 8,668.01, 11,957.96 and 5,129.16

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Solution

The fourth proportional to 8,668.01, 11,957.96 and 5,129.16 is: 7,075.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.01 : 11,957.96 = 5,129.16 : x
  2. Step 2: Convert to fraction form
    8,668.01/11,957.96 = 5,129.16/x
  3. Step 3: Cross multiply
    8,668.01x = 11,957.96 × 5,129.16
  4. Step 4: Simplify right side
    8,668.01x = 61,334,258.09
  5. Step 5: Solve for x
    x = 61,334,258.09/8,668.01
  6. Step 6: Final answer
    x = 7,075.93

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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.