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Finding the Fourth Proportional to 4,639.70, 6,953.70 and 3,316.56

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Solution

The fourth proportional to 4,639.70, 6,953.70 and 3,316.56 is: 4,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.70 : 6,953.70 = 3,316.56 : x
  2. Step 2: Convert to fraction form
    4,639.70/6,953.70 = 3,316.56/x
  3. Step 3: Cross multiply
    4,639.70x = 6,953.70 × 3,316.56
  4. Step 4: Simplify right side
    4,639.70x = 23,062,363.27
  5. Step 5: Solve for x
    x = 23,062,363.27/4,639.70
  6. Step 6: Final answer
    x = 4,970.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.