Home / 5,191.48-7,162.07-3,399.40

Finding the Fourth Proportional to 5,191.48, 7,162.07 and 3,399.40

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Solution

The fourth proportional to 5,191.48, 7,162.07 and 3,399.40 is: 4,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.48 : 7,162.07 = 3,399.40 : x
  2. Step 2: Convert to fraction form
    5,191.48/7,162.07 = 3,399.40/x
  3. Step 3: Cross multiply
    5,191.48x = 7,162.07 × 3,399.40
  4. Step 4: Simplify right side
    5,191.48x = 24,346,740.76
  5. Step 5: Solve for x
    x = 24,346,740.76/5,191.48
  6. Step 6: Final answer
    x = 4,689.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.