Home / 3,258.40-4,886.70-1,310.80

Finding the Fourth Proportional to 3,258.40, 4,886.70 and 1,310.80

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Solution

The fourth proportional to 3,258.40, 4,886.70 and 1,310.80 is: 1,965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.40 : 4,886.70 = 1,310.80 : x
  2. Step 2: Convert to fraction form
    3,258.40/4,886.70 = 1,310.80/x
  3. Step 3: Cross multiply
    3,258.40x = 4,886.70 × 1,310.80
  4. Step 4: Simplify right side
    3,258.40x = 6,405,486.36
  5. Step 5: Solve for x
    x = 6,405,486.36/3,258.40
  6. Step 6: Final answer
    x = 1,965.84

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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.