Home / 5,173.33-7,139.22-2,815.49

Finding the Fourth Proportional to 5,173.33, 7,139.22 and 2,815.49

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Solution

The fourth proportional to 5,173.33, 7,139.22 and 2,815.49 is: 3,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.33 : 7,139.22 = 2,815.49 : x
  2. Step 2: Convert to fraction form
    5,173.33/7,139.22 = 2,815.49/x
  3. Step 3: Cross multiply
    5,173.33x = 7,139.22 × 2,815.49
  4. Step 4: Simplify right side
    5,173.33x = 20,100,430.92
  5. Step 5: Solve for x
    x = 20,100,430.92/5,173.33
  6. Step 6: Final answer
    x = 3,885.40

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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.