Home / 3,281.28-4,917.32-2,792.40

Finding the Fourth Proportional to 3,281.28, 4,917.32 and 2,792.40

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Solution

The fourth proportional to 3,281.28, 4,917.32 and 2,792.40 is: 4,184.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.28 : 4,917.32 = 2,792.40 : x
  2. Step 2: Convert to fraction form
    3,281.28/4,917.32 = 2,792.40/x
  3. Step 3: Cross multiply
    3,281.28x = 4,917.32 × 2,792.40
  4. Step 4: Simplify right side
    3,281.28x = 13,731,124.37
  5. Step 5: Solve for x
    x = 13,731,124.37/3,281.28
  6. Step 6: Final answer
    x = 4,184.69

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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.