Home / 7,578.58-10,458.76-4,221.18

Finding the Fourth Proportional to 7,578.58, 10,458.76 and 4,221.18

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Solution

The fourth proportional to 7,578.58, 10,458.76 and 4,221.18 is: 5,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.58 : 10,458.76 = 4,221.18 : x
  2. Step 2: Convert to fraction form
    7,578.58/10,458.76 = 4,221.18/x
  3. Step 3: Cross multiply
    7,578.58x = 10,458.76 × 4,221.18
  4. Step 4: Simplify right side
    7,578.58x = 44,148,308.54
  5. Step 5: Solve for x
    x = 44,148,308.54/7,578.58
  6. Step 6: Final answer
    x = 5,825.41

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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.