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Finding the Fourth Proportional to 4,903.12, 7,355.02 and 1,981.38

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Solution

The fourth proportional to 4,903.12, 7,355.02 and 1,981.38 is: 2,972.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,903.12 : 7,355.02 = 1,981.38 : x
  2. Step 2: Convert to fraction form
    4,903.12/7,355.02 = 1,981.38/x
  3. Step 3: Cross multiply
    4,903.12x = 7,355.02 × 1,981.38
  4. Step 4: Simplify right side
    4,903.12x = 14,573,089.53
  5. Step 5: Solve for x
    x = 14,573,089.53/4,903.12
  6. Step 6: Final answer
    x = 2,972.21

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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.