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Finding the Fourth Proportional to 7,242.93, 10,839.78 and 5,606.78

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Solution

The fourth proportional to 7,242.93, 10,839.78 and 5,606.78 is: 8,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.93 : 10,839.78 = 5,606.78 : x
  2. Step 2: Convert to fraction form
    7,242.93/10,839.78 = 5,606.78/x
  3. Step 3: Cross multiply
    7,242.93x = 10,839.78 × 5,606.78
  4. Step 4: Simplify right side
    7,242.93x = 60,776,207.51
  5. Step 5: Solve for x
    x = 60,776,207.51/7,242.93
  6. Step 6: Final answer
    x = 8,391.11

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1.5x scale

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.