Home / 5,438.79-8,159.45-2,107.49

Finding the Fourth Proportional to 5,438.79, 8,159.45 and 2,107.49

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Solution

The fourth proportional to 5,438.79, 8,159.45 and 2,107.49 is: 3,161.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.79 : 8,159.45 = 2,107.49 : x
  2. Step 2: Convert to fraction form
    5,438.79/8,159.45 = 2,107.49/x
  3. Step 3: Cross multiply
    5,438.79x = 8,159.45 × 2,107.49
  4. Step 4: Simplify right side
    5,438.79x = 17,195,907.95
  5. Step 5: Solve for x
    x = 17,195,907.95/5,438.79
  6. Step 6: Final answer
    x = 3,161.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.