Home / 3,928.90-5,891.50-1,154.86

Finding the Fourth Proportional to 3,928.90, 5,891.50 and 1,154.86

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Solution

The fourth proportional to 3,928.90, 5,891.50 and 1,154.86 is: 1,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.90 : 5,891.50 = 1,154.86 : x
  2. Step 2: Convert to fraction form
    3,928.90/5,891.50 = 1,154.86/x
  3. Step 3: Cross multiply
    3,928.90x = 5,891.50 × 1,154.86
  4. Step 4: Simplify right side
    3,928.90x = 6,803,857.69
  5. Step 5: Solve for x
    x = 6,803,857.69/3,928.90
  6. Step 6: Final answer
    x = 1,731.75

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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.