Home / 3,137.58-4,330.53-2,145.20

Finding the Fourth Proportional to 3,137.58, 4,330.53 and 2,145.20

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Solution

The fourth proportional to 3,137.58, 4,330.53 and 2,145.20 is: 2,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.58 : 4,330.53 = 2,145.20 : x
  2. Step 2: Convert to fraction form
    3,137.58/4,330.53 = 2,145.20/x
  3. Step 3: Cross multiply
    3,137.58x = 4,330.53 × 2,145.20
  4. Step 4: Simplify right side
    3,137.58x = 9,289,831.30
  5. Step 5: Solve for x
    x = 9,289,831.30/3,137.58
  6. Step 6: Final answer
    x = 2,960.83

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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.