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Finding the Fourth Proportional to 7,243.95, 9,991.48 and 6,648.37

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Solution

The fourth proportional to 7,243.95, 9,991.48 and 6,648.37 is: 9,170.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.95 : 9,991.48 = 6,648.37 : x
  2. Step 2: Convert to fraction form
    7,243.95/9,991.48 = 6,648.37/x
  3. Step 3: Cross multiply
    7,243.95x = 9,991.48 × 6,648.37
  4. Step 4: Simplify right side
    7,243.95x = 66,427,055.89
  5. Step 5: Solve for x
    x = 66,427,055.89/7,243.95
  6. Step 6: Final answer
    x = 9,170.00

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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.