Home / 5,578.38-7,701.21-3,812.58

Finding the Fourth Proportional to 5,578.38, 7,701.21 and 3,812.58

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Solution

The fourth proportional to 5,578.38, 7,701.21 and 3,812.58 is: 5,263.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.38 : 7,701.21 = 3,812.58 : x
  2. Step 2: Convert to fraction form
    5,578.38/7,701.21 = 3,812.58/x
  3. Step 3: Cross multiply
    5,578.38x = 7,701.21 × 3,812.58
  4. Step 4: Simplify right side
    5,578.38x = 29,361,479.22
  5. Step 5: Solve for x
    x = 29,361,479.22/5,578.38
  6. Step 6: Final answer
    x = 5,263.44

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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.