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Finding the Fourth Proportional to 6,662.55, 9,976.71 and 6,465.45

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Solution

The fourth proportional to 6,662.55, 9,976.71 and 6,465.45 is: 9,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662.55 : 9,976.71 = 6,465.45 : x
  2. Step 2: Convert to fraction form
    6,662.55/9,976.71 = 6,465.45/x
  3. Step 3: Cross multiply
    6,662.55x = 9,976.71 × 6,465.45
  4. Step 4: Simplify right side
    6,662.55x = 64,503,919.67
  5. Step 5: Solve for x
    x = 64,503,919.67/6,662.55
  6. Step 6: Final answer
    x = 9,681.57

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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.