Home / 3,209.85-4,429.53-1,812.60

Finding the Fourth Proportional to 3,209.85, 4,429.53 and 1,812.60

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Solution

The fourth proportional to 3,209.85, 4,429.53 and 1,812.60 is: 2,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.85 : 4,429.53 = 1,812.60 : x
  2. Step 2: Convert to fraction form
    3,209.85/4,429.53 = 1,812.60/x
  3. Step 3: Cross multiply
    3,209.85x = 4,429.53 × 1,812.60
  4. Step 4: Simplify right side
    3,209.85x = 8,028,966.08
  5. Step 5: Solve for x
    x = 8,028,966.08/3,209.85
  6. Step 6: Final answer
    x = 2,501.35

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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.