Home / 5,420.91-8,132.58-1,958.16

Finding the Fourth Proportional to 5,420.91, 8,132.58 and 1,958.16

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Solution

The fourth proportional to 5,420.91, 8,132.58 and 1,958.16 is: 2,937.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.91 : 8,132.58 = 1,958.16 : x
  2. Step 2: Convert to fraction form
    5,420.91/8,132.58 = 1,958.16/x
  3. Step 3: Cross multiply
    5,420.91x = 8,132.58 × 1,958.16
  4. Step 4: Simplify right side
    5,420.91x = 15,924,892.85
  5. Step 5: Solve for x
    x = 15,924,892.85/5,420.91
  6. Step 6: Final answer
    x = 2,937.68

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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.