Home / 3,246.15-4,480.10-2,128.03

Finding the Fourth Proportional to 3,246.15, 4,480.10 and 2,128.03

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Solution

The fourth proportional to 3,246.15, 4,480.10 and 2,128.03 is: 2,936.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.15 : 4,480.10 = 2,128.03 : x
  2. Step 2: Convert to fraction form
    3,246.15/4,480.10 = 2,128.03/x
  3. Step 3: Cross multiply
    3,246.15x = 4,480.10 × 2,128.03
  4. Step 4: Simplify right side
    3,246.15x = 9,533,787.20
  5. Step 5: Solve for x
    x = 9,533,787.20/3,246.15
  6. Step 6: Final answer
    x = 2,936.95

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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.