Home / 3,986.84-5,501.58-2,415.80

Finding the Fourth Proportional to 3,986.84, 5,501.58 and 2,415.80

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Solution

The fourth proportional to 3,986.84, 5,501.58 and 2,415.80 is: 3,333.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.84 : 5,501.58 = 2,415.80 : x
  2. Step 2: Convert to fraction form
    3,986.84/5,501.58 = 2,415.80/x
  3. Step 3: Cross multiply
    3,986.84x = 5,501.58 × 2,415.80
  4. Step 4: Simplify right side
    3,986.84x = 13,290,716.96
  5. Step 5: Solve for x
    x = 13,290,716.96/3,986.84
  6. Step 6: Final answer
    x = 3,333.65

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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.