Home / 7,140.10-10,708.26-3,243.64

Finding the Fourth Proportional to 7,140.10, 10,708.26 and 3,243.64

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Solution

The fourth proportional to 7,140.10, 10,708.26 and 3,243.64 is: 4,864.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.10 : 10,708.26 = 3,243.64 : x
  2. Step 2: Convert to fraction form
    7,140.10/10,708.26 = 3,243.64/x
  3. Step 3: Cross multiply
    7,140.10x = 10,708.26 × 3,243.64
  4. Step 4: Simplify right side
    7,140.10x = 34,733,740.47
  5. Step 5: Solve for x
    x = 34,733,740.47/7,140.10
  6. Step 6: Final answer
    x = 4,864.60

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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.