Home / 8,529.76-11,767.26-4,991.40

Finding the Fourth Proportional to 8,529.76, 11,767.26 and 4,991.40

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Solution

The fourth proportional to 8,529.76, 11,767.26 and 4,991.40 is: 6,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,529.76 : 11,767.26 = 4,991.40 : x
  2. Step 2: Convert to fraction form
    8,529.76/11,767.26 = 4,991.40/x
  3. Step 3: Cross multiply
    8,529.76x = 11,767.26 × 4,991.40
  4. Step 4: Simplify right side
    8,529.76x = 58,735,101.56
  5. Step 5: Solve for x
    x = 58,735,101.56/8,529.76
  6. Step 6: Final answer
    x = 6,885.90

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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.