Home / 2,912.48-4,341.28-2,679.20

Finding the Fourth Proportional to 2,912.48, 4,341.28 and 2,679.20

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Solution

The fourth proportional to 2,912.48, 4,341.28 and 2,679.20 is: 3,993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.48 : 4,341.28 = 2,679.20 : x
  2. Step 2: Convert to fraction form
    2,912.48/4,341.28 = 2,679.20/x
  3. Step 3: Cross multiply
    2,912.48x = 4,341.28 × 2,679.20
  4. Step 4: Simplify right side
    2,912.48x = 11,631,157.38
  5. Step 5: Solve for x
    x = 11,631,157.38/2,912.48
  6. Step 6: Final answer
    x = 3,993.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.