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Finding the Fourth Proportional to 4,990.86, 7,487.10 and 2,392.92

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Solution

The fourth proportional to 4,990.86, 7,487.10 and 2,392.92 is: 3,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.86 : 7,487.10 = 2,392.92 : x
  2. Step 2: Convert to fraction form
    4,990.86/7,487.10 = 2,392.92/x
  3. Step 3: Cross multiply
    4,990.86x = 7,487.10 × 2,392.92
  4. Step 4: Simplify right side
    4,990.86x = 17,916,031.33
  5. Step 5: Solve for x
    x = 17,916,031.33/4,990.86
  6. Step 6: Final answer
    x = 3,589.77

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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.