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Finding the Fourth Proportional to 8,383.95, 11,512.65 and 7,499.43

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Solution

The fourth proportional to 8,383.95, 11,512.65 and 7,499.43 is: 10,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.95 : 11,512.65 = 7,499.43 : x
  2. Step 2: Convert to fraction form
    8,383.95/11,512.65 = 7,499.43/x
  3. Step 3: Cross multiply
    8,383.95x = 11,512.65 × 7,499.43
  4. Step 4: Simplify right side
    8,383.95x = 86,338,312.79
  5. Step 5: Solve for x
    x = 86,338,312.79/8,383.95
  6. Step 6: Final answer
    x = 10,298.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.