Home / 2,431.64-3,357.78-1,906.76

Finding the Fourth Proportional to 2,431.64, 3,357.78 and 1,906.76

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Solution

The fourth proportional to 2,431.64, 3,357.78 and 1,906.76 is: 2,632.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.64 : 3,357.78 = 1,906.76 : x
  2. Step 2: Convert to fraction form
    2,431.64/3,357.78 = 1,906.76/x
  3. Step 3: Cross multiply
    2,431.64x = 3,357.78 × 1,906.76
  4. Step 4: Simplify right side
    2,431.64x = 6,402,480.59
  5. Step 5: Solve for x
    x = 6,402,480.59/2,431.64
  6. Step 6: Final answer
    x = 2,632.99

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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.