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Finding the Fourth Proportional to 6,630.15, 9,946.70 and 2,187.64

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Solution

The fourth proportional to 6,630.15, 9,946.70 and 2,187.64 is: 3,281.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.15 : 9,946.70 = 2,187.64 : x
  2. Step 2: Convert to fraction form
    6,630.15/9,946.70 = 2,187.64/x
  3. Step 3: Cross multiply
    6,630.15x = 9,946.70 × 2,187.64
  4. Step 4: Simplify right side
    6,630.15x = 21,759,808.49
  5. Step 5: Solve for x
    x = 21,759,808.49/6,630.15
  6. Step 6: Final answer
    x = 3,281.95

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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.