Home / 3,206.40-4,808.16-1,257.60

Finding the Fourth Proportional to 3,206.40, 4,808.16 and 1,257.60

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Solution

The fourth proportional to 3,206.40, 4,808.16 and 1,257.60 is: 1,885.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,206.40 : 4,808.16 = 1,257.60 : x
  2. Step 2: Convert to fraction form
    3,206.40/4,808.16 = 1,257.60/x
  3. Step 3: Cross multiply
    3,206.40x = 4,808.16 × 1,257.60
  4. Step 4: Simplify right side
    3,206.40x = 6,046,742.02
  5. Step 5: Solve for x
    x = 6,046,742.02/3,206.40
  6. Step 6: Final answer
    x = 1,885.84

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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.