Home / 3,331.15-4,999.79-1,688.86

Finding the Fourth Proportional to 3,331.15, 4,999.79 and 1,688.86

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Solution

The fourth proportional to 3,331.15, 4,999.79 and 1,688.86 is: 2,534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,331.15 : 4,999.79 = 1,688.86 : x
  2. Step 2: Convert to fraction form
    3,331.15/4,999.79 = 1,688.86/x
  3. Step 3: Cross multiply
    3,331.15x = 4,999.79 × 1,688.86
  4. Step 4: Simplify right side
    3,331.15x = 8,443,911.90
  5. Step 5: Solve for x
    x = 8,443,911.90/3,331.15
  6. Step 6: Final answer
    x = 2,534.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.