Home / 7,664.28-11,491.04-3,917.20

Finding the Fourth Proportional to 7,664.28, 11,491.04 and 3,917.20

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Solution

The fourth proportional to 7,664.28, 11,491.04 and 3,917.20 is: 5,873.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,664.28 : 11,491.04 = 3,917.20 : x
  2. Step 2: Convert to fraction form
    7,664.28/11,491.04 = 3,917.20/x
  3. Step 3: Cross multiply
    7,664.28x = 11,491.04 × 3,917.20
  4. Step 4: Simplify right side
    7,664.28x = 45,012,701.89
  5. Step 5: Solve for x
    x = 45,012,701.89/7,664.28
  6. Step 6: Final answer
    x = 5,873.05

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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.