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Finding the Fourth Proportional to 3,102.91, 4,652.99 and 1,931.14

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Solution

The fourth proportional to 3,102.91, 4,652.99 and 1,931.14 is: 2,895.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.91 : 4,652.99 = 1,931.14 : x
  2. Step 2: Convert to fraction form
    3,102.91/4,652.99 = 1,931.14/x
  3. Step 3: Cross multiply
    3,102.91x = 4,652.99 × 1,931.14
  4. Step 4: Simplify right side
    3,102.91x = 8,985,589.37
  5. Step 5: Solve for x
    x = 8,985,589.37/3,102.91
  6. Step 6: Final answer
    x = 2,895.86

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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.