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Finding the Fourth Proportional to 5,056.97, 6,978.86 and 2,818.86

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Solution

The fourth proportional to 5,056.97, 6,978.86 and 2,818.86 is: 3,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,056.97 : 6,978.86 = 2,818.86 : x
  2. Step 2: Convert to fraction form
    5,056.97/6,978.86 = 2,818.86/x
  3. Step 3: Cross multiply
    5,056.97x = 6,978.86 × 2,818.86
  4. Step 4: Simplify right side
    5,056.97x = 19,672,415.21
  5. Step 5: Solve for x
    x = 19,672,415.21/5,056.97
  6. Step 6: Final answer
    x = 3,890.16

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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.