Home / 5,103.63-7,043.78-3,115.34

Finding the Fourth Proportional to 5,103.63, 7,043.78 and 3,115.34

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Solution

The fourth proportional to 5,103.63, 7,043.78 and 3,115.34 is: 4,299.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,103.63 : 7,043.78 = 3,115.34 : x
  2. Step 2: Convert to fraction form
    5,103.63/7,043.78 = 3,115.34/x
  3. Step 3: Cross multiply
    5,103.63x = 7,043.78 × 3,115.34
  4. Step 4: Simplify right side
    5,103.63x = 21,943,787.19
  5. Step 5: Solve for x
    x = 21,943,787.19/5,103.63
  6. Step 6: Final answer
    x = 4,299.64

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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.