Home / 4,188.84-5,778.94-2,420.08

Finding the Fourth Proportional to 4,188.84, 5,778.94 and 2,420.08

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Solution

The fourth proportional to 4,188.84, 5,778.94 and 2,420.08 is: 3,338.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.84 : 5,778.94 = 2,420.08 : x
  2. Step 2: Convert to fraction form
    4,188.84/5,778.94 = 2,420.08/x
  3. Step 3: Cross multiply
    4,188.84x = 5,778.94 × 2,420.08
  4. Step 4: Simplify right side
    4,188.84x = 13,985,497.12
  5. Step 5: Solve for x
    x = 13,985,497.12/4,188.84
  6. Step 6: Final answer
    x = 3,338.75

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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.