Home / 5,114.36-7,051.32-3,920.72

Finding the Fourth Proportional to 5,114.36, 7,051.32 and 3,920.72

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Solution

The fourth proportional to 5,114.36, 7,051.32 and 3,920.72 is: 5,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,114.36 : 7,051.32 = 3,920.72 : x
  2. Step 2: Convert to fraction form
    5,114.36/7,051.32 = 3,920.72/x
  3. Step 3: Cross multiply
    5,114.36x = 7,051.32 × 3,920.72
  4. Step 4: Simplify right side
    5,114.36x = 27,646,251.35
  5. Step 5: Solve for x
    x = 27,646,251.35/5,114.36
  6. Step 6: Final answer
    x = 5,405.61

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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.