Home / 4,720.40-7,084.92-3,424.40

Finding the Fourth Proportional to 4,720.40, 7,084.92 and 3,424.40

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Solution

The fourth proportional to 4,720.40, 7,084.92 and 3,424.40 is: 5,139.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.40 : 7,084.92 = 3,424.40 : x
  2. Step 2: Convert to fraction form
    4,720.40/7,084.92 = 3,424.40/x
  3. Step 3: Cross multiply
    4,720.40x = 7,084.92 × 3,424.40
  4. Step 4: Simplify right side
    4,720.40x = 24,261,600.05
  5. Step 5: Solve for x
    x = 24,261,600.05/4,720.40
  6. Step 6: Final answer
    x = 5,139.73

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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.