Home / 4,999.38-6,900.03-3,111.72

Finding the Fourth Proportional to 4,999.38, 6,900.03 and 3,111.72

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Solution

The fourth proportional to 4,999.38, 6,900.03 and 3,111.72 is: 4,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.38 : 6,900.03 = 3,111.72 : x
  2. Step 2: Convert to fraction form
    4,999.38/6,900.03 = 3,111.72/x
  3. Step 3: Cross multiply
    4,999.38x = 6,900.03 × 3,111.72
  4. Step 4: Simplify right side
    4,999.38x = 21,470,961.35
  5. Step 5: Solve for x
    x = 21,470,961.35/4,999.38
  6. Step 6: Final answer
    x = 4,294.72

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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.