Home / 5,159.12-7,122.12-3,511.76

Finding the Fourth Proportional to 5,159.12, 7,122.12 and 3,511.76

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Solution

The fourth proportional to 5,159.12, 7,122.12 and 3,511.76 is: 4,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.12 : 7,122.12 = 3,511.76 : x
  2. Step 2: Convert to fraction form
    5,159.12/7,122.12 = 3,511.76/x
  3. Step 3: Cross multiply
    5,159.12x = 7,122.12 × 3,511.76
  4. Step 4: Simplify right side
    5,159.12x = 25,011,176.13
  5. Step 5: Solve for x
    x = 25,011,176.13/5,159.12
  6. Step 6: Final answer
    x = 4,847.95

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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.