Home / 3,455.38-4,768.18-2,129.11

Finding the Fourth Proportional to 3,455.38, 4,768.18 and 2,129.11

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Solution

The fourth proportional to 3,455.38, 4,768.18 and 2,129.11 is: 2,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.38 : 4,768.18 = 2,129.11 : x
  2. Step 2: Convert to fraction form
    3,455.38/4,768.18 = 2,129.11/x
  3. Step 3: Cross multiply
    3,455.38x = 4,768.18 × 2,129.11
  4. Step 4: Simplify right side
    3,455.38x = 10,151,979.72
  5. Step 5: Solve for x
    x = 10,151,979.72/3,455.38
  6. Step 6: Final answer
    x = 2,938.02

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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.