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Finding the Fourth Proportional to 9,265.20, 13,897.80 and 8,645.55

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Solution

The fourth proportional to 9,265.20, 13,897.80 and 8,645.55 is: 12,968.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,265.20 : 13,897.80 = 8,645.55 : x
  2. Step 2: Convert to fraction form
    9,265.20/13,897.80 = 8,645.55/x
  3. Step 3: Cross multiply
    9,265.20x = 13,897.80 × 8,645.55
  4. Step 4: Simplify right side
    9,265.20x = 120,154,124.79
  5. Step 5: Solve for x
    x = 120,154,124.79/9,265.20
  6. Step 6: Final answer
    x = 12,968.33

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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.