Home / 5,388.72-8,090.64-4,405.92

Finding the Fourth Proportional to 5,388.72, 8,090.64 and 4,405.92

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Solution

The fourth proportional to 5,388.72, 8,090.64 and 4,405.92 is: 6,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.72 : 8,090.64 = 4,405.92 : x
  2. Step 2: Convert to fraction form
    5,388.72/8,090.64 = 4,405.92/x
  3. Step 3: Cross multiply
    5,388.72x = 8,090.64 × 4,405.92
  4. Step 4: Simplify right side
    5,388.72x = 35,646,712.59
  5. Step 5: Solve for x
    x = 35,646,712.59/5,388.72
  6. Step 6: Final answer
    x = 6,615.06

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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.