Home / 3,390.61-4,679.37-1,974.73

Finding the Fourth Proportional to 3,390.61, 4,679.37 and 1,974.73

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Solution

The fourth proportional to 3,390.61, 4,679.37 and 1,974.73 is: 2,725.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.61 : 4,679.37 = 1,974.73 : x
  2. Step 2: Convert to fraction form
    3,390.61/4,679.37 = 1,974.73/x
  3. Step 3: Cross multiply
    3,390.61x = 4,679.37 × 1,974.73
  4. Step 4: Simplify right side
    3,390.61x = 9,240,492.32
  5. Step 5: Solve for x
    x = 9,240,492.32/3,390.61
  6. Step 6: Final answer
    x = 2,725.32

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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.