Home / 3,953.32-5,455.38-2,275

Finding the Fourth Proportional to 3,953.32, 5,455.38 and 2,275

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Solution

The fourth proportional to 3,953.32, 5,455.38 and 2,275 is: 3,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.32 : 5,455.38 = 2,275 : x
  2. Step 2: Convert to fraction form
    3,953.32/5,455.38 = 2,275/x
  3. Step 3: Cross multiply
    3,953.32x = 5,455.38 × 2,275
  4. Step 4: Simplify right side
    3,953.32x = 12,410,989.50
  5. Step 5: Solve for x
    x = 12,410,989.50/3,953.32
  6. Step 6: Final answer
    x = 3,139.38

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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.