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Finding the Fourth Proportional to 5,271.92, 7,905.12 and 2,636.60

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Solution

The fourth proportional to 5,271.92, 7,905.12 and 2,636.60 is: 3,953.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.92 : 7,905.12 = 2,636.60 : x
  2. Step 2: Convert to fraction form
    5,271.92/7,905.12 = 2,636.60/x
  3. Step 3: Cross multiply
    5,271.92x = 7,905.12 × 2,636.60
  4. Step 4: Simplify right side
    5,271.92x = 20,842,639.39
  5. Step 5: Solve for x
    x = 20,842,639.39/5,271.92
  6. Step 6: Final answer
    x = 3,953.52

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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.