Home / 5,430.28-8,149.74-2,144.20

Finding the Fourth Proportional to 5,430.28, 8,149.74 and 2,144.20

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Solution

The fourth proportional to 5,430.28, 8,149.74 and 2,144.20 is: 3,218.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.28 : 8,149.74 = 2,144.20 : x
  2. Step 2: Convert to fraction form
    5,430.28/8,149.74 = 2,144.20/x
  3. Step 3: Cross multiply
    5,430.28x = 8,149.74 × 2,144.20
  4. Step 4: Simplify right side
    5,430.28x = 17,474,672.51
  5. Step 5: Solve for x
    x = 17,474,672.51/5,430.28
  6. Step 6: Final answer
    x = 3,218.01

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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.