Home / 7,127.50-10,684.14-3,428.68

Finding the Fourth Proportional to 7,127.50, 10,684.14 and 3,428.68

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Solution

The fourth proportional to 7,127.50, 10,684.14 and 3,428.68 is: 5,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.50 : 10,684.14 = 3,428.68 : x
  2. Step 2: Convert to fraction form
    7,127.50/10,684.14 = 3,428.68/x
  3. Step 3: Cross multiply
    7,127.50x = 10,684.14 × 3,428.68
  4. Step 4: Simplify right side
    7,127.50x = 36,632,497.14
  5. Step 5: Solve for x
    x = 36,632,497.14/7,127.50
  6. Step 6: Final answer
    x = 5,139.60

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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.