Home / 2,792.40-3,853.36-1,672.68

Finding the Fourth Proportional to 2,792.40, 3,853.36 and 1,672.68

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Solution

The fourth proportional to 2,792.40, 3,853.36 and 1,672.68 is: 2,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.40 : 3,853.36 = 1,672.68 : x
  2. Step 2: Convert to fraction form
    2,792.40/3,853.36 = 1,672.68/x
  3. Step 3: Cross multiply
    2,792.40x = 3,853.36 × 1,672.68
  4. Step 4: Simplify right side
    2,792.40x = 6,445,438.20
  5. Step 5: Solve for x
    x = 6,445,438.20/2,792.40
  6. Step 6: Final answer
    x = 2,308.21

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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.