Home / 3,910.80-5,867.58-1,313.74

Finding the Fourth Proportional to 3,910.80, 5,867.58 and 1,313.74

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Solution

The fourth proportional to 3,910.80, 5,867.58 and 1,313.74 is: 1,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.80 : 5,867.58 = 1,313.74 : x
  2. Step 2: Convert to fraction form
    3,910.80/5,867.58 = 1,313.74/x
  3. Step 3: Cross multiply
    3,910.80x = 5,867.58 × 1,313.74
  4. Step 4: Simplify right side
    3,910.80x = 7,708,474.55
  5. Step 5: Solve for x
    x = 7,708,474.55/3,910.80
  6. Step 6: Final answer
    x = 1,971.07

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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.