Home / 3,999.51-5,520.85-3,146.56

Finding the Fourth Proportional to 3,999.51, 5,520.85 and 3,146.56

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Solution

The fourth proportional to 3,999.51, 5,520.85 and 3,146.56 is: 4,343.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.51 : 5,520.85 = 3,146.56 : x
  2. Step 2: Convert to fraction form
    3,999.51/5,520.85 = 3,146.56/x
  3. Step 3: Cross multiply
    3,999.51x = 5,520.85 × 3,146.56
  4. Step 4: Simplify right side
    3,999.51x = 17,371,664.11
  5. Step 5: Solve for x
    x = 17,371,664.11/3,999.51
  6. Step 6: Final answer
    x = 4,343.45

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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.