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Finding the Fourth Proportional to 4,992.32, 6,889.34 and 2,977.12

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Solution

The fourth proportional to 4,992.32, 6,889.34 and 2,977.12 is: 4,108.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.32 : 6,889.34 = 2,977.12 : x
  2. Step 2: Convert to fraction form
    4,992.32/6,889.34 = 2,977.12/x
  3. Step 3: Cross multiply
    4,992.32x = 6,889.34 × 2,977.12
  4. Step 4: Simplify right side
    4,992.32x = 20,510,391.90
  5. Step 5: Solve for x
    x = 20,510,391.90/4,992.32
  6. Step 6: Final answer
    x = 4,108.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.