Home / 3,209.75-4,816.55-1,385.75

Finding the Fourth Proportional to 3,209.75, 4,816.55 and 1,385.75

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Solution

The fourth proportional to 3,209.75, 4,816.55 and 1,385.75 is: 2,079.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.75 : 4,816.55 = 1,385.75 : x
  2. Step 2: Convert to fraction form
    3,209.75/4,816.55 = 1,385.75/x
  3. Step 3: Cross multiply
    3,209.75x = 4,816.55 × 1,385.75
  4. Step 4: Simplify right side
    3,209.75x = 6,674,534.16
  5. Step 5: Solve for x
    x = 6,674,534.16/3,209.75
  6. Step 6: Final answer
    x = 2,079.46

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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.