Home / 7,578.75-10,458.99-4,221.56

Finding the Fourth Proportional to 7,578.75, 10,458.99 and 4,221.56

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Solution

The fourth proportional to 7,578.75, 10,458.99 and 4,221.56 is: 5,825.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.75 : 10,458.99 = 4,221.56 : x
  2. Step 2: Convert to fraction form
    7,578.75/10,458.99 = 4,221.56/x
  3. Step 3: Cross multiply
    7,578.75x = 10,458.99 × 4,221.56
  4. Step 4: Simplify right side
    7,578.75x = 44,153,250.56
  5. Step 5: Solve for x
    x = 44,153,250.56/7,578.75
  6. Step 6: Final answer
    x = 5,825.93

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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.