Home / 2,511.21-3,465.48-1,392.09

Finding the Fourth Proportional to 2,511.21, 3,465.48 and 1,392.09

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Solution

The fourth proportional to 2,511.21, 3,465.48 and 1,392.09 is: 1,921.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.21 : 3,465.48 = 1,392.09 : x
  2. Step 2: Convert to fraction form
    2,511.21/3,465.48 = 1,392.09/x
  3. Step 3: Cross multiply
    2,511.21x = 3,465.48 × 1,392.09
  4. Step 4: Simplify right side
    2,511.21x = 4,824,260.05
  5. Step 5: Solve for x
    x = 4,824,260.05/2,511.21
  6. Step 6: Final answer
    x = 1,921.09

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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.