Home / 5,420.98-8,132.69-1,958.23

Finding the Fourth Proportional to 5,420.98, 8,132.69 and 1,958.23

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Solution

The fourth proportional to 5,420.98, 8,132.69 and 1,958.23 is: 2,937.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.98 : 8,132.69 = 1,958.23 : x
  2. Step 2: Convert to fraction form
    5,420.98/8,132.69 = 1,958.23/x
  3. Step 3: Cross multiply
    5,420.98x = 8,132.69 × 1,958.23
  4. Step 4: Simplify right side
    5,420.98x = 15,925,677.54
  5. Step 5: Solve for x
    x = 15,925,677.54/5,420.98
  6. Step 6: Final answer
    x = 2,937.79

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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.