Home / 5,420.60-7,471.68-3,926.48

Finding the Fourth Proportional to 5,420.60, 7,471.68 and 3,926.48

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Solution

The fourth proportional to 5,420.60, 7,471.68 and 3,926.48 is: 5,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.60 : 7,471.68 = 3,926.48 : x
  2. Step 2: Convert to fraction form
    5,420.60/7,471.68 = 3,926.48/x
  3. Step 3: Cross multiply
    5,420.60x = 7,471.68 × 3,926.48
  4. Step 4: Simplify right side
    5,420.60x = 29,337,402.09
  5. Step 5: Solve for x
    x = 29,337,402.09/5,420.60
  6. Step 6: Final answer
    x = 5,412.21

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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.