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Finding the Fourth Proportional to 3,056.86, 4,218.28 and 1,693.86

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Solution

The fourth proportional to 3,056.86, 4,218.28 and 1,693.86 is: 2,337.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056.86 : 4,218.28 = 1,693.86 : x
  2. Step 2: Convert to fraction form
    3,056.86/4,218.28 = 1,693.86/x
  3. Step 3: Cross multiply
    3,056.86x = 4,218.28 × 1,693.86
  4. Step 4: Simplify right side
    3,056.86x = 7,145,179.44
  5. Step 5: Solve for x
    x = 7,145,179.44/3,056.86
  6. Step 6: Final answer
    x = 2,337.43

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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.