Home / 6,604.58-9,905.79-1,986.50

Finding the Fourth Proportional to 6,604.58, 9,905.79 and 1,986.50

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Solution

The fourth proportional to 6,604.58, 9,905.79 and 1,986.50 is: 2,979.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,604.58 : 9,905.79 = 1,986.50 : x
  2. Step 2: Convert to fraction form
    6,604.58/9,905.79 = 1,986.50/x
  3. Step 3: Cross multiply
    6,604.58x = 9,905.79 × 1,986.50
  4. Step 4: Simplify right side
    6,604.58x = 19,677,851.84
  5. Step 5: Solve for x
    x = 19,677,851.84/6,604.58
  6. Step 6: Final answer
    x = 2,979.43

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Double scale
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Similar ratio
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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.