Home / 5,388.79-7,434.08-3,894.34

Finding the Fourth Proportional to 5,388.79, 7,434.08 and 3,894.34

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Solution

The fourth proportional to 5,388.79, 7,434.08 and 3,894.34 is: 5,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.79 : 7,434.08 = 3,894.34 : x
  2. Step 2: Convert to fraction form
    5,388.79/7,434.08 = 3,894.34/x
  3. Step 3: Cross multiply
    5,388.79x = 7,434.08 × 3,894.34
  4. Step 4: Simplify right side
    5,388.79x = 28,950,847.50
  5. Step 5: Solve for x
    x = 28,950,847.50/5,388.79
  6. Step 6: Final answer
    x = 5,372.42

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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.