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Finding the Fourth Proportional to 5,056.76, 6,978.33 and 2,818.62

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Solution

The fourth proportional to 5,056.76, 6,978.33 and 2,818.62 is: 3,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,056.76 : 6,978.33 = 2,818.62 : x
  2. Step 2: Convert to fraction form
    5,056.76/6,978.33 = 2,818.62/x
  3. Step 3: Cross multiply
    5,056.76x = 6,978.33 × 2,818.62
  4. Step 4: Simplify right side
    5,056.76x = 19,669,260.50
  5. Step 5: Solve for x
    x = 19,669,260.50/5,056.76
  6. Step 6: Final answer
    x = 3,889.69

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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.