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Finding the Fourth Proportional to 7,091.84, 10,636.80 and 1,898.08

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Solution

The fourth proportional to 7,091.84, 10,636.80 and 1,898.08 is: 2,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.84 : 10,636.80 = 1,898.08 : x
  2. Step 2: Convert to fraction form
    7,091.84/10,636.80 = 1,898.08/x
  3. Step 3: Cross multiply
    7,091.84x = 10,636.80 × 1,898.08
  4. Step 4: Simplify right side
    7,091.84x = 20,189,497.34
  5. Step 5: Solve for x
    x = 20,189,497.34/7,091.84
  6. Step 6: Final answer
    x = 2,846.86

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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.