Home / 3,378.71-4,664.28-2,620.78

Finding the Fourth Proportional to 3,378.71, 4,664.28 and 2,620.78

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Solution

The fourth proportional to 3,378.71, 4,664.28 and 2,620.78 is: 3,617.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.71 : 4,664.28 = 2,620.78 : x
  2. Step 2: Convert to fraction form
    3,378.71/4,664.28 = 2,620.78/x
  3. Step 3: Cross multiply
    3,378.71x = 4,664.28 × 2,620.78
  4. Step 4: Simplify right side
    3,378.71x = 12,224,051.74
  5. Step 5: Solve for x
    x = 12,224,051.74/3,378.71
  6. Step 6: Final answer
    x = 3,617.96

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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.