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Finding the Fourth Proportional to 7,834.79, 10,812.02 and 4,648.25

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Solution

The fourth proportional to 7,834.79, 10,812.02 and 4,648.25 is: 6,414.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,834.79 : 10,812.02 = 4,648.25 : x
  2. Step 2: Convert to fraction form
    7,834.79/10,812.02 = 4,648.25/x
  3. Step 3: Cross multiply
    7,834.79x = 10,812.02 × 4,648.25
  4. Step 4: Simplify right side
    7,834.79x = 50,256,975.75
  5. Step 5: Solve for x
    x = 50,256,975.75/7,834.79
  6. Step 6: Final answer
    x = 6,414.59

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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.