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Finding the Fourth Proportional to 9,275.47, 12,800.84 and 5,740.73

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Solution

The fourth proportional to 9,275.47, 12,800.84 and 5,740.73 is: 7,922.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,275.47 : 12,800.84 = 5,740.73 : x
  2. Step 2: Convert to fraction form
    9,275.47/12,800.84 = 5,740.73/x
  3. Step 3: Cross multiply
    9,275.47x = 12,800.84 × 5,740.73
  4. Step 4: Simplify right side
    9,275.47x = 73,486,166.21
  5. Step 5: Solve for x
    x = 73,486,166.21/9,275.47
  6. Step 6: Final answer
    x = 7,922.64

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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.