Home / 4,188.86-5,778.97-2,420.14

Finding the Fourth Proportional to 4,188.86, 5,778.97 and 2,420.14

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Solution

The fourth proportional to 4,188.86, 5,778.97 and 2,420.14 is: 3,338.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.86 : 5,778.97 = 2,420.14 : x
  2. Step 2: Convert to fraction form
    4,188.86/5,778.97 = 2,420.14/x
  3. Step 3: Cross multiply
    4,188.86x = 5,778.97 × 2,420.14
  4. Step 4: Simplify right side
    4,188.86x = 13,985,916.46
  5. Step 5: Solve for x
    x = 13,985,916.46/4,188.86
  6. Step 6: Final answer
    x = 3,338.84

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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.