Home / 8,240.32-12,359.24-3,857.36

Finding the Fourth Proportional to 8,240.32, 12,359.24 and 3,857.36

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Solution

The fourth proportional to 8,240.32, 12,359.24 and 3,857.36 is: 5,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,240.32 : 12,359.24 = 3,857.36 : x
  2. Step 2: Convert to fraction form
    8,240.32/12,359.24 = 3,857.36/x
  3. Step 3: Cross multiply
    8,240.32x = 12,359.24 × 3,857.36
  4. Step 4: Simplify right side
    8,240.32x = 47,674,038.01
  5. Step 5: Solve for x
    x = 47,674,038.01/8,240.32
  6. Step 6: Final answer
    x = 5,785.46

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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.