Home / 3,259.30-4,890.15-1,311.70

Finding the Fourth Proportional to 3,259.30, 4,890.15 and 1,311.70

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Solution

The fourth proportional to 3,259.30, 4,890.15 and 1,311.70 is: 1,968.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,259.30 : 4,890.15 = 1,311.70 : x
  2. Step 2: Convert to fraction form
    3,259.30/4,890.15 = 1,311.70/x
  3. Step 3: Cross multiply
    3,259.30x = 4,890.15 × 1,311.70
  4. Step 4: Simplify right side
    3,259.30x = 6,414,409.76
  5. Step 5: Solve for x
    x = 6,414,409.76/3,259.30
  6. Step 6: Final answer
    x = 1,968.03

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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.