Home / 5,008.96-6,912.44-3,121.31

Finding the Fourth Proportional to 5,008.96, 6,912.44 and 3,121.31

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Solution

The fourth proportional to 5,008.96, 6,912.44 and 3,121.31 is: 4,307.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.96 : 6,912.44 = 3,121.31 : x
  2. Step 2: Convert to fraction form
    5,008.96/6,912.44 = 3,121.31/x
  3. Step 3: Cross multiply
    5,008.96x = 6,912.44 × 3,121.31
  4. Step 4: Simplify right side
    5,008.96x = 21,575,862.03
  5. Step 5: Solve for x
    x = 21,575,862.03/5,008.96
  6. Step 6: Final answer
    x = 4,307.45

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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.