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Finding the Fourth Proportional to 8,390.79, 11,583.62 and 6,599.38

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Solution

The fourth proportional to 8,390.79, 11,583.62 and 6,599.38 is: 9,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.79 : 11,583.62 = 6,599.38 : x
  2. Step 2: Convert to fraction form
    8,390.79/11,583.62 = 6,599.38/x
  3. Step 3: Cross multiply
    8,390.79x = 11,583.62 × 6,599.38
  4. Step 4: Simplify right side
    8,390.79x = 76,444,710.16
  5. Step 5: Solve for x
    x = 76,444,710.16/8,390.79
  6. Step 6: Final answer
    x = 9,110.55

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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.