Home / 8,247.36-11,386.32-5,419.20

Finding the Fourth Proportional to 8,247.36, 11,386.32 and 5,419.20

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Solution

The fourth proportional to 8,247.36, 11,386.32 and 5,419.20 is: 7,481.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,247.36 : 11,386.32 = 5,419.20 : x
  2. Step 2: Convert to fraction form
    8,247.36/11,386.32 = 5,419.20/x
  3. Step 3: Cross multiply
    8,247.36x = 11,386.32 × 5,419.20
  4. Step 4: Simplify right side
    8,247.36x = 61,704,745.34
  5. Step 5: Solve for x
    x = 61,704,745.34/8,247.36
  6. Step 6: Final answer
    x = 7,481.76

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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.