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Finding the Fourth Proportional to 8,383.93, 12,561.18 and 5,090.47

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Solution

The fourth proportional to 8,383.93, 12,561.18 and 5,090.47 is: 7,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.93 : 12,561.18 = 5,090.47 : x
  2. Step 2: Convert to fraction form
    8,383.93/12,561.18 = 5,090.47/x
  3. Step 3: Cross multiply
    8,383.93x = 12,561.18 × 5,090.47
  4. Step 4: Simplify right side
    8,383.93x = 63,942,309.95
  5. Step 5: Solve for x
    x = 63,942,309.95/8,383.93
  6. Step 6: Final answer
    x = 7,626.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.