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Finding the Fourth Proportional to 8,613.58, 11,893.74 and 7,020.46

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Solution

The fourth proportional to 8,613.58, 11,893.74 and 7,020.46 is: 9,693.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.58 : 11,893.74 = 7,020.46 : x
  2. Step 2: Convert to fraction form
    8,613.58/11,893.74 = 7,020.46/x
  3. Step 3: Cross multiply
    8,613.58x = 11,893.74 × 7,020.46
  4. Step 4: Simplify right side
    8,613.58x = 83,499,525.92
  5. Step 5: Solve for x
    x = 83,499,525.92/8,613.58
  6. Step 6: Final answer
    x = 9,693.94

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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.