Home / 3,654.38-5,477.16-1,431.20

Finding the Fourth Proportional to 3,654.38, 5,477.16 and 1,431.20

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Solution

The fourth proportional to 3,654.38, 5,477.16 and 1,431.20 is: 2,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,654.38 : 5,477.16 = 1,431.20 : x
  2. Step 2: Convert to fraction form
    3,654.38/5,477.16 = 1,431.20/x
  3. Step 3: Cross multiply
    3,654.38x = 5,477.16 × 1,431.20
  4. Step 4: Simplify right side
    3,654.38x = 7,838,911.39
  5. Step 5: Solve for x
    x = 7,838,911.39/3,654.38
  6. Step 6: Final answer
    x = 2,145.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.