Home / 7,179.18-9,907.40-3,992.74

Finding the Fourth Proportional to 7,179.18, 9,907.40 and 3,992.74

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Solution

The fourth proportional to 7,179.18, 9,907.40 and 3,992.74 is: 5,510.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.18 : 9,907.40 = 3,992.74 : x
  2. Step 2: Convert to fraction form
    7,179.18/9,907.40 = 3,992.74/x
  3. Step 3: Cross multiply
    7,179.18x = 9,907.40 × 3,992.74
  4. Step 4: Simplify right side
    7,179.18x = 39,557,657.49
  5. Step 5: Solve for x
    x = 39,557,657.49/7,179.18
  6. Step 6: Final answer
    x = 5,510.06

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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.