Home / 7,125.21-10,689.98-3,426.39

Finding the Fourth Proportional to 7,125.21, 10,689.98 and 3,426.39

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Solution

The fourth proportional to 7,125.21, 10,689.98 and 3,426.39 is: 5,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.21 : 10,689.98 = 3,426.39 : x
  2. Step 2: Convert to fraction form
    7,125.21/10,689.98 = 3,426.39/x
  3. Step 3: Cross multiply
    7,125.21x = 10,689.98 × 3,426.39
  4. Step 4: Simplify right side
    7,125.21x = 36,628,023.44
  5. Step 5: Solve for x
    x = 36,628,023.44/7,125.21
  6. Step 6: Final answer
    x = 5,140.62

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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.