Home / 3,259.69-4,887.91-1,311.37

Finding the Fourth Proportional to 3,259.69, 4,887.91 and 1,311.37

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Solution

The fourth proportional to 3,259.69, 4,887.91 and 1,311.37 is: 1,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,259.69 : 4,887.91 = 1,311.37 : x
  2. Step 2: Convert to fraction form
    3,259.69/4,887.91 = 1,311.37/x
  3. Step 3: Cross multiply
    3,259.69x = 4,887.91 × 1,311.37
  4. Step 4: Simplify right side
    3,259.69x = 6,409,847.96
  5. Step 5: Solve for x
    x = 6,409,847.96/3,259.69
  6. Step 6: Final answer
    x = 1,966.40

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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.