Home / 5,401.44-7,454.96-5,155.20

Finding the Fourth Proportional to 5,401.44, 7,454.96 and 5,155.20

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Solution

The fourth proportional to 5,401.44, 7,454.96 and 5,155.20 is: 7,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,401.44 : 7,454.96 = 5,155.20 : x
  2. Step 2: Convert to fraction form
    5,401.44/7,454.96 = 5,155.20/x
  3. Step 3: Cross multiply
    5,401.44x = 7,454.96 × 5,155.20
  4. Step 4: Simplify right side
    5,401.44x = 38,431,809.79
  5. Step 5: Solve for x
    x = 38,431,809.79/5,401.44
  6. Step 6: Final answer
    x = 7,115.10

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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.