Home / 2,568.20-3,852.28-620.40

Finding the Fourth Proportional to 2,568.20, 3,852.28 and 620.40

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Solution

The fourth proportional to 2,568.20, 3,852.28 and 620.40 is: 930.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.20 : 3,852.28 = 620.40 : x
  2. Step 2: Convert to fraction form
    2,568.20/3,852.28 = 620.40/x
  3. Step 3: Cross multiply
    2,568.20x = 3,852.28 × 620.40
  4. Step 4: Simplify right side
    2,568.20x = 2,389,951.41
  5. Step 5: Solve for x
    x = 2,389,951.41/2,568.20
  6. Step 6: Final answer
    x = 930.59

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1.5x scale

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.