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Finding the Fourth Proportional to 7,243.04, 9,991.32 and 5,256.56

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Solution

The fourth proportional to 7,243.04, 9,991.32 and 5,256.56 is: 7,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.04 : 9,991.32 = 5,256.56 : x
  2. Step 2: Convert to fraction form
    7,243.04/9,991.32 = 5,256.56/x
  3. Step 3: Cross multiply
    7,243.04x = 9,991.32 × 5,256.56
  4. Step 4: Simplify right side
    7,243.04x = 52,519,973.06
  5. Step 5: Solve for x
    x = 52,519,973.06/7,243.04
  6. Step 6: Final answer
    x = 7,251.10

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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.