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Finding the Fourth Proportional to 7,172.94, 10,747.62 and 6,899.55

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Solution

The fourth proportional to 7,172.94, 10,747.62 and 6,899.55 is: 10,337.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.94 : 10,747.62 = 6,899.55 : x
  2. Step 2: Convert to fraction form
    7,172.94/10,747.62 = 6,899.55/x
  3. Step 3: Cross multiply
    7,172.94x = 10,747.62 × 6,899.55
  4. Step 4: Simplify right side
    7,172.94x = 74,153,741.57
  5. Step 5: Solve for x
    x = 74,153,741.57/7,172.94
  6. Step 6: Final answer
    x = 10,337.98

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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.