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Finding the Fourth Proportional to 5,252.47, 7,878.07 and 1,964.68

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Solution

The fourth proportional to 5,252.47, 7,878.07 and 1,964.68 is: 2,946.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,252.47 : 7,878.07 = 1,964.68 : x
  2. Step 2: Convert to fraction form
    5,252.47/7,878.07 = 1,964.68/x
  3. Step 3: Cross multiply
    5,252.47x = 7,878.07 × 1,964.68
  4. Step 4: Simplify right side
    5,252.47x = 15,477,861.96
  5. Step 5: Solve for x
    x = 15,477,861.96/5,252.47
  6. Step 6: Final answer
    x = 2,946.78

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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.