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Finding the Fourth Proportional to 5,057.10, 6,978.93 and 2,818.86

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Solution

The fourth proportional to 5,057.10, 6,978.93 and 2,818.86 is: 3,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.10 : 6,978.93 = 2,818.86 : x
  2. Step 2: Convert to fraction form
    5,057.10/6,978.93 = 2,818.86/x
  3. Step 3: Cross multiply
    5,057.10x = 6,978.93 × 2,818.86
  4. Step 4: Simplify right side
    5,057.10x = 19,672,626.62
  5. Step 5: Solve for x
    x = 19,672,626.62/5,057.10
  6. Step 6: Final answer
    x = 3,890.10

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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.