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Finding the Fourth Proportional to 7,072.98, 10,609.47 and 2,689.40

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Solution

The fourth proportional to 7,072.98, 10,609.47 and 2,689.40 is: 4,034.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.98 : 10,609.47 = 2,689.40 : x
  2. Step 2: Convert to fraction form
    7,072.98/10,609.47 = 2,689.40/x
  3. Step 3: Cross multiply
    7,072.98x = 10,609.47 × 2,689.40
  4. Step 4: Simplify right side
    7,072.98x = 28,533,055.57
  5. Step 5: Solve for x
    x = 28,533,055.57/7,072.98
  6. Step 6: Final answer
    x = 4,034.09

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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.