Home / 7,578.99-10,457.62-4,221.72

Finding the Fourth Proportional to 7,578.99, 10,457.62 and 4,221.72

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Solution

The fourth proportional to 7,578.99, 10,457.62 and 4,221.72 is: 5,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.99 : 10,457.62 = 4,221.72 : x
  2. Step 2: Convert to fraction form
    7,578.99/10,457.62 = 4,221.72/x
  3. Step 3: Cross multiply
    7,578.99x = 10,457.62 × 4,221.72
  4. Step 4: Simplify right side
    7,578.99x = 44,149,115.92
  5. Step 5: Solve for x
    x = 44,149,115.92/7,578.99
  6. Step 6: Final answer
    x = 5,825.20

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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.