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Finding the Fourth Proportional to 8,613.90, 11,888.73 and 5,076.90

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Solution

The fourth proportional to 8,613.90, 11,888.73 and 5,076.90 is: 7,007.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.90 : 11,888.73 = 5,076.90 : x
  2. Step 2: Convert to fraction form
    8,613.90/11,888.73 = 5,076.90/x
  3. Step 3: Cross multiply
    8,613.90x = 11,888.73 × 5,076.90
  4. Step 4: Simplify right side
    8,613.90x = 60,357,893.34
  5. Step 5: Solve for x
    x = 60,357,893.34/8,613.90
  6. Step 6: Final answer
    x = 7,007.03

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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.