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Finding the Fourth Proportional to 4,992.61, 7,489.10 and 1,872.30

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Solution

The fourth proportional to 4,992.61, 7,489.10 and 1,872.30 is: 2,808.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.61 : 7,489.10 = 1,872.30 : x
  2. Step 2: Convert to fraction form
    4,992.61/7,489.10 = 1,872.30/x
  3. Step 3: Cross multiply
    4,992.61x = 7,489.10 × 1,872.30
  4. Step 4: Simplify right side
    4,992.61x = 14,021,832.57
  5. Step 5: Solve for x
    x = 14,021,832.57/4,992.61
  6. Step 6: Final answer
    x = 2,808.52

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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.