Home / 2,792.40-4,188.48-1,330.64

Finding the Fourth Proportional to 2,792.40, 4,188.48 and 1,330.64

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Solution

The fourth proportional to 2,792.40, 4,188.48 and 1,330.64 is: 1,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.40 : 4,188.48 = 1,330.64 : x
  2. Step 2: Convert to fraction form
    2,792.40/4,188.48 = 1,330.64/x
  3. Step 3: Cross multiply
    2,792.40x = 4,188.48 × 1,330.64
  4. Step 4: Simplify right side
    2,792.40x = 5,573,359.03
  5. Step 5: Solve for x
    x = 5,573,359.03/2,792.40
  6. Step 6: Final answer
    x = 1,995.90

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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.