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Finding the Fourth Proportional to 9,200.61, 12,697.11 and 5,221.89

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Solution

The fourth proportional to 9,200.61, 12,697.11 and 5,221.89 is: 7,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,200.61 : 12,697.11 = 5,221.89 : x
  2. Step 2: Convert to fraction form
    9,200.61/12,697.11 = 5,221.89/x
  3. Step 3: Cross multiply
    9,200.61x = 12,697.11 × 5,221.89
  4. Step 4: Simplify right side
    9,200.61x = 66,302,911.74
  5. Step 5: Solve for x
    x = 66,302,911.74/9,200.61
  6. Step 6: Final answer
    x = 7,206.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.