Home / 5,479.44-7,561.53-3,121.26

Finding the Fourth Proportional to 5,479.44, 7,561.53 and 3,121.26

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Solution

The fourth proportional to 5,479.44, 7,561.53 and 3,121.26 is: 4,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.44 : 7,561.53 = 3,121.26 : x
  2. Step 2: Convert to fraction form
    5,479.44/7,561.53 = 3,121.26/x
  3. Step 3: Cross multiply
    5,479.44x = 7,561.53 × 3,121.26
  4. Step 4: Simplify right side
    5,479.44x = 23,601,501.13
  5. Step 5: Solve for x
    x = 23,601,501.13/5,479.44
  6. Step 6: Final answer
    x = 4,307.28

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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.