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Finding the Fourth Proportional to 6,989.45, 10,404.93 and 6,952.49

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Solution

The fourth proportional to 6,989.45, 10,404.93 and 6,952.49 is: 10,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.45 : 10,404.93 = 6,952.49 : x
  2. Step 2: Convert to fraction form
    6,989.45/10,404.93 = 6,952.49/x
  3. Step 3: Cross multiply
    6,989.45x = 10,404.93 × 6,952.49
  4. Step 4: Simplify right side
    6,989.45x = 72,340,137.01
  5. Step 5: Solve for x
    x = 72,340,137.01/6,989.45
  6. Step 6: Final answer
    x = 10,349.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.