Home / 7,112.64-10,674.20-5,742.36

Finding the Fourth Proportional to 7,112.64, 10,674.20 and 5,742.36

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Solution

The fourth proportional to 7,112.64, 10,674.20 and 5,742.36 is: 8,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.64 : 10,674.20 = 5,742.36 : x
  2. Step 2: Convert to fraction form
    7,112.64/10,674.20 = 5,742.36/x
  3. Step 3: Cross multiply
    7,112.64x = 10,674.20 × 5,742.36
  4. Step 4: Simplify right side
    7,112.64x = 61,295,099.11
  5. Step 5: Solve for x
    x = 61,295,099.11/7,112.64
  6. Step 6: Final answer
    x = 8,617.77

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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.