Home / 2,642.20-3,639.70-2,453.16

Finding the Fourth Proportional to 2,642.20, 3,639.70 and 2,453.16

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Solution

The fourth proportional to 2,642.20, 3,639.70 and 2,453.16 is: 3,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.20 : 3,639.70 = 2,453.16 : x
  2. Step 2: Convert to fraction form
    2,642.20/3,639.70 = 2,453.16/x
  3. Step 3: Cross multiply
    2,642.20x = 3,639.70 × 2,453.16
  4. Step 4: Simplify right side
    2,642.20x = 8,928,766.45
  5. Step 5: Solve for x
    x = 8,928,766.45/2,642.20
  6. Step 6: Final answer
    x = 3,379.29

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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.