Home / 7,140.96-10,712.46-2,211.06

Finding the Fourth Proportional to 7,140.96, 10,712.46 and 2,211.06

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Solution

The fourth proportional to 7,140.96, 10,712.46 and 2,211.06 is: 3,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.96 : 10,712.46 = 2,211.06 : x
  2. Step 2: Convert to fraction form
    7,140.96/10,712.46 = 2,211.06/x
  3. Step 3: Cross multiply
    7,140.96x = 10,712.46 × 2,211.06
  4. Step 4: Simplify right side
    7,140.96x = 23,685,891.81
  5. Step 5: Solve for x
    x = 23,685,891.81/7,140.96
  6. Step 6: Final answer
    x = 3,316.91

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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.