Home / 8,120.81-11,207.21-4,535.76

Finding the Fourth Proportional to 8,120.81, 11,207.21 and 4,535.76

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Solution

The fourth proportional to 8,120.81, 11,207.21 and 4,535.76 is: 6,259.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.81 : 11,207.21 = 4,535.76 : x
  2. Step 2: Convert to fraction form
    8,120.81/11,207.21 = 4,535.76/x
  3. Step 3: Cross multiply
    8,120.81x = 11,207.21 × 4,535.76
  4. Step 4: Simplify right side
    8,120.81x = 50,833,214.83
  5. Step 5: Solve for x
    x = 50,833,214.83/8,120.81
  6. Step 6: Final answer
    x = 6,259.62

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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.