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Finding the Fourth Proportional to 3,981.51, 5,972.15 and 1,902.98

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Solution

The fourth proportional to 3,981.51, 5,972.15 and 1,902.98 is: 2,854.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.51 : 5,972.15 = 1,902.98 : x
  2. Step 2: Convert to fraction form
    3,981.51/5,972.15 = 1,902.98/x
  3. Step 3: Cross multiply
    3,981.51x = 5,972.15 × 1,902.98
  4. Step 4: Simplify right side
    3,981.51x = 11,364,842.63
  5. Step 5: Solve for x
    x = 11,364,842.63/3,981.51
  6. Step 6: Final answer
    x = 2,854.41

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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.