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Finding the Fourth Proportional to 4,920.12, 7,373.99 and 3,875.99

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Solution

The fourth proportional to 4,920.12, 7,373.99 and 3,875.99 is: 5,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.12 : 7,373.99 = 3,875.99 : x
  2. Step 2: Convert to fraction form
    4,920.12/7,373.99 = 3,875.99/x
  3. Step 3: Cross multiply
    4,920.12x = 7,373.99 × 3,875.99
  4. Step 4: Simplify right side
    4,920.12x = 28,581,455.25
  5. Step 5: Solve for x
    x = 28,581,455.25/4,920.12
  6. Step 6: Final answer
    x = 5,809.10

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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.