Home / 7,388.40-11,066.40-5,731.92

Finding the Fourth Proportional to 7,388.40, 11,066.40 and 5,731.92

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Solution

The fourth proportional to 7,388.40, 11,066.40 and 5,731.92 is: 8,585.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,388.40 : 11,066.40 = 5,731.92 : x
  2. Step 2: Convert to fraction form
    7,388.40/11,066.40 = 5,731.92/x
  3. Step 3: Cross multiply
    7,388.40x = 11,066.40 × 5,731.92
  4. Step 4: Simplify right side
    7,388.40x = 63,431,719.49
  5. Step 5: Solve for x
    x = 63,431,719.49/7,388.40
  6. Step 6: Final answer
    x = 8,585.31

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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.