Home / 5,479.48-7,561.14-3,121.48

Finding the Fourth Proportional to 5,479.48, 7,561.14 and 3,121.48

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Solution

The fourth proportional to 5,479.48, 7,561.14 and 3,121.48 is: 4,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.48 : 7,561.14 = 3,121.48 : x
  2. Step 2: Convert to fraction form
    5,479.48/7,561.14 = 3,121.48/x
  3. Step 3: Cross multiply
    5,479.48x = 7,561.14 × 3,121.48
  4. Step 4: Simplify right side
    5,479.48x = 23,601,947.29
  5. Step 5: Solve for x
    x = 23,601,947.29/5,479.48
  6. Step 6: Final answer
    x = 4,307.33

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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.