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Finding the Fourth Proportional to 7,355, 10,142.92 and 4,839.25

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Solution

The fourth proportional to 7,355, 10,142.92 and 4,839.25 is: 6,673.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,355 : 10,142.92 = 4,839.25 : x
  2. Step 2: Convert to fraction form
    7,355/10,142.92 = 4,839.25/x
  3. Step 3: Cross multiply
    7,355x = 10,142.92 × 4,839.25
  4. Step 4: Simplify right side
    7,355x = 49,084,050.70
  5. Step 5: Solve for x
    x = 49,084,050.70/7,355
  6. Step 6: Final answer
    x = 6,673.56

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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.