Home / 3,453.55-4,768.14-2,129.20

Finding the Fourth Proportional to 3,453.55, 4,768.14 and 2,129.20

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Solution

The fourth proportional to 3,453.55, 4,768.14 and 2,129.20 is: 2,939.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.55 : 4,768.14 = 2,129.20 : x
  2. Step 2: Convert to fraction form
    3,453.55/4,768.14 = 2,129.20/x
  3. Step 3: Cross multiply
    3,453.55x = 4,768.14 × 2,129.20
  4. Step 4: Simplify right side
    3,453.55x = 10,152,323.69
  5. Step 5: Solve for x
    x = 10,152,323.69/3,453.55
  6. Step 6: Final answer
    x = 2,939.68

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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.