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Finding the Fourth Proportional to 5,350.57, 7,372.78 and 4,818.40

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Solution

The fourth proportional to 5,350.57, 7,372.78 and 4,818.40 is: 6,639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,350.57 : 7,372.78 = 4,818.40 : x
  2. Step 2: Convert to fraction form
    5,350.57/7,372.78 = 4,818.40/x
  3. Step 3: Cross multiply
    5,350.57x = 7,372.78 × 4,818.40
  4. Step 4: Simplify right side
    5,350.57x = 35,525,003.15
  5. Step 5: Solve for x
    x = 35,525,003.15/5,350.57
  6. Step 6: Final answer
    x = 6,639.48

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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.