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Finding the Fourth Proportional to 5,626.76, 7,764.78 and 3,108.74

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Solution

The fourth proportional to 5,626.76, 7,764.78 and 3,108.74 is: 4,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,626.76 : 7,764.78 = 3,108.74 : x
  2. Step 2: Convert to fraction form
    5,626.76/7,764.78 = 3,108.74/x
  3. Step 3: Cross multiply
    5,626.76x = 7,764.78 × 3,108.74
  4. Step 4: Simplify right side
    5,626.76x = 24,138,682.18
  5. Step 5: Solve for x
    x = 24,138,682.18/5,626.76
  6. Step 6: Final answer
    x = 4,289.98

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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.