Home / 3,387.64-4,665.30-2,640.28

Finding the Fourth Proportional to 3,387.64, 4,665.30 and 2,640.28

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Solution

The fourth proportional to 3,387.64, 4,665.30 and 2,640.28 is: 3,636.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.64 : 4,665.30 = 2,640.28 : x
  2. Step 2: Convert to fraction form
    3,387.64/4,665.30 = 2,640.28/x
  3. Step 3: Cross multiply
    3,387.64x = 4,665.30 × 2,640.28
  4. Step 4: Simplify right side
    3,387.64x = 12,317,698.28
  5. Step 5: Solve for x
    x = 12,317,698.28/3,387.64
  6. Step 6: Final answer
    x = 3,636.07

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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.