Home / 3,206.16-4,423.20-1,808.64

Finding the Fourth Proportional to 3,206.16, 4,423.20 and 1,808.64

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Solution

The fourth proportional to 3,206.16, 4,423.20 and 1,808.64 is: 2,495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,206.16 : 4,423.20 = 1,808.64 : x
  2. Step 2: Convert to fraction form
    3,206.16/4,423.20 = 1,808.64/x
  3. Step 3: Cross multiply
    3,206.16x = 4,423.20 × 1,808.64
  4. Step 4: Simplify right side
    3,206.16x = 7,999,976.45
  5. Step 5: Solve for x
    x = 7,999,976.45/3,206.16
  6. Step 6: Final answer
    x = 2,495.19

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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.