Home / 7,124.03-10,688.20-3,425.21

Finding the Fourth Proportional to 7,124.03, 10,688.20 and 3,425.21

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Solution

The fourth proportional to 7,124.03, 10,688.20 and 3,425.21 is: 5,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.03 : 10,688.20 = 3,425.21 : x
  2. Step 2: Convert to fraction form
    7,124.03/10,688.20 = 3,425.21/x
  3. Step 3: Cross multiply
    7,124.03x = 10,688.20 × 3,425.21
  4. Step 4: Simplify right side
    7,124.03x = 36,609,258.95
  5. Step 5: Solve for x
    x = 36,609,258.95/7,124.03
  6. Step 6: Final answer
    x = 5,138.84

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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.