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Finding the Fourth Proportional to 3,981.96, 5,973 and 1,384.98

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Solution

The fourth proportional to 3,981.96, 5,973 and 1,384.98 is: 2,077.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.96 : 5,973 = 1,384.98 : x
  2. Step 2: Convert to fraction form
    3,981.96/5,973 = 1,384.98/x
  3. Step 3: Cross multiply
    3,981.96x = 5,973 × 1,384.98
  4. Step 4: Simplify right side
    3,981.96x = 8,272,485.54
  5. Step 5: Solve for x
    x = 8,272,485.54/3,981.96
  6. Step 6: Final answer
    x = 2,077.49

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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.