Home / 4,188.73-5,780.49-2,420.30

Finding the Fourth Proportional to 4,188.73, 5,780.49 and 2,420.30

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Solution

The fourth proportional to 4,188.73, 5,780.49 and 2,420.30 is: 3,340.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.73 : 5,780.49 = 2,420.30 : x
  2. Step 2: Convert to fraction form
    4,188.73/5,780.49 = 2,420.30/x
  3. Step 3: Cross multiply
    4,188.73x = 5,780.49 × 2,420.30
  4. Step 4: Simplify right side
    4,188.73x = 13,990,519.95
  5. Step 5: Solve for x
    x = 13,990,519.95/4,188.73
  6. Step 6: Final answer
    x = 3,340.04

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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.