Home / 5,111.03-7,053.87-3,121.17

Finding the Fourth Proportional to 5,111.03, 7,053.87 and 3,121.17

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Solution

The fourth proportional to 5,111.03, 7,053.87 and 3,121.17 is: 4,307.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.03 : 7,053.87 = 3,121.17 : x
  2. Step 2: Convert to fraction form
    5,111.03/7,053.87 = 3,121.17/x
  3. Step 3: Cross multiply
    5,111.03x = 7,053.87 × 3,121.17
  4. Step 4: Simplify right side
    5,111.03x = 22,016,327.43
  5. Step 5: Solve for x
    x = 22,016,327.43/5,111.03
  6. Step 6: Final answer
    x = 4,307.61

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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.