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Finding the Fourth Proportional to 8,389.80, 11,575.86 and 5,032.86

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Solution

The fourth proportional to 8,389.80, 11,575.86 and 5,032.86 is: 6,944.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.80 : 11,575.86 = 5,032.86 : x
  2. Step 2: Convert to fraction form
    8,389.80/11,575.86 = 5,032.86/x
  3. Step 3: Cross multiply
    8,389.80x = 11,575.86 × 5,032.86
  4. Step 4: Simplify right side
    8,389.80x = 58,259,682.76
  5. Step 5: Solve for x
    x = 58,259,682.76/8,389.80
  6. Step 6: Final answer
    x = 6,944.11

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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.