Home / 3,007.35-4,148.69-2,121.21

Finding the Fourth Proportional to 3,007.35, 4,148.69 and 2,121.21

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Solution

The fourth proportional to 3,007.35, 4,148.69 and 2,121.21 is: 2,926.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.35 : 4,148.69 = 2,121.21 : x
  2. Step 2: Convert to fraction form
    3,007.35/4,148.69 = 2,121.21/x
  3. Step 3: Cross multiply
    3,007.35x = 4,148.69 × 2,121.21
  4. Step 4: Simplify right side
    3,007.35x = 8,800,232.11
  5. Step 5: Solve for x
    x = 8,800,232.11/3,007.35
  6. Step 6: Final answer
    x = 2,926.24

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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.