Home / 2,455.38-3,388.37-1,407.38

Finding the Fourth Proportional to 2,455.38, 3,388.37 and 1,407.38

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Solution

The fourth proportional to 2,455.38, 3,388.37 and 1,407.38 is: 1,942.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.38 : 3,388.37 = 1,407.38 : x
  2. Step 2: Convert to fraction form
    2,455.38/3,388.37 = 1,407.38/x
  3. Step 3: Cross multiply
    2,455.38x = 3,388.37 × 1,407.38
  4. Step 4: Simplify right side
    2,455.38x = 4,768,700.19
  5. Step 5: Solve for x
    x = 4,768,700.19/2,455.38
  6. Step 6: Final answer
    x = 1,942.14

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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.