Home / 5,389.50-7,439.94-3,994.68

Finding the Fourth Proportional to 5,389.50, 7,439.94 and 3,994.68

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Solution

The fourth proportional to 5,389.50, 7,439.94 and 3,994.68 is: 5,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.50 : 7,439.94 = 3,994.68 : x
  2. Step 2: Convert to fraction form
    5,389.50/7,439.94 = 3,994.68/x
  3. Step 3: Cross multiply
    5,389.50x = 7,439.94 × 3,994.68
  4. Step 4: Simplify right side
    5,389.50x = 29,720,179.52
  5. Step 5: Solve for x
    x = 29,720,179.52/5,389.50
  6. Step 6: Final answer
    x = 5,514.46

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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.